How to upgrade Reign of Dragons, the Lathliss precon

Lathliss, Dragon Queen makes every Dragon two, but the precon’s Dragons cost five on average. Twelve cuts, adds at three budgets, and the lines that close a game.

Aymeric Lamontagne

Oct 29, 2026

Reign of Dragons is the Foundations Commander deck with the highest ceiling and the lowest floor — that was the verdict when we ranked all five it fourth — and the upgrade path follows directly from why. The engine is sound. Lathliss, Dragon Queen turns every Dragon you cast into two Dragons, and the box already carries the cards that turn two Dragons into a great deal of damage: Dragon Tempest, Scourge of Valkas, Utvara Hellkite.

What holds it back is one number. The 19 Dragons in the 99 — counting the changeling Taurean Mauler — have an average mana value of exactly 5.0, and only three of them cost three or less. Lathliss pays you per Dragon, so a deck whose Dragons cost five casts one a turn, empties its hand in three turns, and then has nothing to refill it with but red impulse draw. The engine is fine. It is starved.

So the upgrade is not "add bigger Dragons". It is cheaper Dragons — including two artifact creatures that are Dragons by a rules technicality — card draw keyed to casting Dragons, a second piece of protection for a six-mana commander, and a few payoffs that turn Lathliss's 5/5 tokens straight into damage. The twelve suggested swaps at the end cost $57.03 at October 23, 2026 prices, a little under twice the $29.99 box. They bring the Dragon average down from 5.0 to 4.57 and the number of cards at six mana or more from ten to seven, and none of them is a Game Changer, so the deck stays in Bracket 2.

This piece covers five things: what Lathliss actually does and what the 99 is built to do around her, twelve cuts, the adds in three budget tiers, the concrete lines that close a game (and what to do when someone sweeps the board), and the swap table.

• Lathliss, Dragon Queen — The borderless Foundations Commander printing · 4RR · 6/6 Dragon

The plan: every Dragon is two Dragons

Lathliss, Dragon Queen is a six-mana 6/6 flier with two abilities that matter: whenever another nontoken Dragon you control enters, you create a 5/5 red Dragon token with flying, and {1}{R} gives every Dragon you control +1/+0 until end of turn. Three details in that text decide how the deck has to be built.

First, "nontoken". Her own tokens do not chain, and neither do the other token-makers in the box: the 6/6s from Utvara Hellkite, the monarch Dragons from Skyline Despot, the upkeep 5/5 from Dragonmaster Outcast and the 4/4 from The Elder Dragon War all arrive without a Lathliss trigger. What feeds her is a Dragon card hitting the battlefield — cast from hand, put in by Minion of the Mighty, or copied by Cursed Mirror, which enters as a copy of a Dragon and so enters as a Dragon.

Second, "Dragon" means the creature type, not the card's name or colour. Taurean Mauler is a changeling, so it is every creature type in every zone, so it triggers her. That is the loophole the upgrades lean on. The flip side is just as important: Goddric, Cloaked Reveler and Nogi, Draco-Zealot become Dragons mid-turn, but neither ever enters as one, so Lathliss never sees them.

Third, the tokens are still Dragons entering. Anything that triggers on "a Dragon you control enters" fires twice per Dragon spell once she is out: Dragon Tempest and Scourge of Valkas each deal damage equal to the number of Dragons you control, Dragon's Hoard gets two gold counters (two cards), and Sarkhan, Dragon Ascendant grows twice. Her {1}{R} pump scales the same way — with five Dragons on the table, every activation is five more damage in the air.

The 99 is built in three layers around that. The bottom layer makes six mana arrive early: nine mana rocks, Haven of the Spirit Dragon, and five cost reducers — Dragonspeaker Shaman takes two off every Dragon, and Dragonlord's Servant, Nogi, Herald's Horn and Hazoret's Monument take one each. The top layer is payoffs for Dragons entering, plus sweepers that spare your own board: Breath Weapon hits only non-Dragons and Magmaquake only creatures without flying. The middle layer — the Dragons themselves — is where the deck is thin, and it is where almost every upgrade below goes.

Dragons in the 99

19 — 23 after the swaps

Average Dragon mana value

5.00 — 4.57 after

Dragons at 3 mana or less

3 — 5 after

Cards at 6+ mana

10 — 7 after

Reign of Dragons as printed, counted from Manamancer’s precon catalog and card index on October 25, 2026. Dragons exclude Lathliss and include Taurean Mauler; Shivan Devastator counts at its printed mana value of 1, and Blasphemous Act at 9. The “after” figures assume the twelve swaps at the end of this piece.

What to cut

Twelve slots, chosen by one test: does this card make Lathliss trigger, refill the hand, or protect her? The ones that do none of the three go first. None of them is a bad card in the abstract; each one is a bad use of a slot in this deck.

• Goddric, Cloaked Reveler — becomes a Dragon only with celebration, and never enters as one, so it is a three-mana 3/3 as far as Lathliss is concerned.
• Crucible of Fire — four mana for +3/+3 that does nothing on the turn it lands unless the Dragons are already there, and nothing at all after a sweeper.
• The Elder Dragon War — three turns of slow value: a 2-damage sweep that kills your own Dragonspeaker Shaman and Dragonmaster Outcast, a rummage, and a 4/4 token Lathliss ignores.
• Chain Reaction — the sixth sweeper in a creature deck, and the symmetrical one. Blasphemous Act already covers "everything dies".
• Hit the Mother Lode — seven mana and not a Dragon. With the deck's average nonland card at 3.7 mana, discover 10 typically finds a three- or four-drop and six-odd tapped Treasures — and it costs the turn you wanted to spend casting a Dragon.
• Mana Geyser — a five-mana ritual in a deck whose problem after turn six is cards, not mana.
• Tyrant's Familiar — seven mana, in a deck that already has two better seven-drops in Drakuseth, Maw of Flames and Terror of Mount Velus.
• Hellkite Charger — six mana, and the extra combat costs seven more. Scourge of the Throne gets its extra combat for free and stays.
• Minion of the Mighty — its trick needs six power already attacking, which in practice means Lathliss already in play; the rest of the time it is a 1/1 and a poor topdeck.
• Fire Diamond — enters tapped. Mind Stone costs the same, enters untapped and cashes in for a card later.
• Basilisk Collar — deathtouch and lifelink for a deck that wins by flying over and burning out; the equip mana is better spent on Lathliss's pump.
• One Mountain — for a utility land that taps for red Dragon mana anyway.

What to add

Three tiers, by the price of each card: under $5, $5 to $20, and no ceiling. Every price below is the cheapest English paper printing's TCGplayer market price in Manamancer's card index on October 23, 2026, leaving out the Foundations Commander printings themselves and memorabilia. Every card was checked against the same index on October 25: it exists, it is legal in Commander, and it is red or colourless, so it fits Lathliss's identity.

The budget tier does most of the work. If you buy nothing else, buy that one.

Under $5 each

The budget tier

• Universal Automaton — A one-mana changeling, so a Dragon. With Lathliss out, {1} makes a 1/1 and a 5/5 flier — and Dragonspeaker Shaman makes it free. $0.62.
• Metallic Mimic — Name Dragon: it is one as it enters, and every Dragon after it — tokens included — gets a +1/+1 counter, so her tokens are 6/6s. $1.27.
• Vanquisher's Banner — Name Dragon: draw a card every time you cast one. The only card here that fixes the card flow by itself. $4.54.
• Sarkhan, Fireblood — Three mana: rummage every turn, or add two mana for Dragon spells every turn. A rock that also filters. $0.44.
• Sarkhan's Triumph — An instant Dragon tutor: Utvara for the closing turn, Wrathful Red Dragon for the Act, or Universal Automaton for one more cheap trigger. $2.57.
• Lightning Greaves — A second protection piece beside Swiftfoot Boots for a six-mana commander, and equip {0} hands haste to the next Dragon. $3.49.
• Mind Stone — Fire Diamond’s slot, untapped, and a card when you no longer need the mana. $0.27.
• Maelstrom of the Spirit Dragon — For a Mountain: taps for Dragon mana, and late in the game sacrifices to tutor a Dragon. $1.31.

The two artifact creatures are the heart of the tier. Universal Automaton is the cheapest Lathliss trigger in Magic: one colourless mana for a 1/1 that is every creature type, which means it is also a Dragon spell for Dragonspeaker Shaman, Herald's Horn and Vanquisher's Banner. Metallic Mimic does the same at two mana and then keeps paying, because every later Dragon — including each 5/5 Lathliss makes — enters bigger. If you also own Calling All Angels, Mimic, Banner and Mind Stone are already in that box.

One warning about Lightning Greaves: shroud stops your spells too, so move it off Lathliss before you aim Chandra's Ignition at her. Equip {0} makes that free.

$5 to $20 each

The middle tier

• Ganax, Astral Hunter — A Treasure whenever Ganax or another Dragon enters — tokens too. With Lathliss, every Dragon spell is two Treasures. $5.15.
• Wrathful Red Dragon — Whenever a Dragon you control is dealt damage, it deals that much to any non-Dragon target. Turns your sweepers into burn. $10.16.
• Goldspan Dragon — Haste, a Treasure every attack, and Treasures that tap for two. With Ganax, that is a lot of mana. $11.59.
• Bonehoard Dracosaur — Two cards every upkeep, plus a Treasure, a 3/1 or both. Card advantage that is also a 5/5 first-strike flying Dragon. $15.62.
• Fiery Emancipation — Triples all your damage. Not in the swap table — it would be an eighth card at six mana — but it is the biggest single payoff at this price. $7.63.

Bonehoard Dracosaur is the most important card in this tier, because it attacks the deck's real problem from a second angle: two extra cards every turn it survives, and it triggers Lathliss on the way in. Wrathful Red Dragon is the most fun, because it turns two cards already in the box — Blasphemous Act and Chandra's Ignition — into finishers, which the next section spells out. Ganax, Astral Hunter and Goldspan Dragon are a pair: Ganax makes the Treasures, Goldspan doubles what each one is worth.

No ceiling

The no-ceiling tier

• Terror of the Peaks — Every creature that enters deals its power to any target: each Lathliss token is 5 damage, each Utvara token 6. Replaces Warstorm Surge. $28.89.
• Twinflame Tyrant — Doubles every point of damage you deal to opponents and their permanents. Another Dragon, too. $26.20.
• Urza's Incubator — Name Dragon: they cost two less. Next to Dragonspeaker Shaman, Thunderbreak Regent costs {R}{R}. $20.52.
• Deflecting Swat — Free while Lathliss is out: send the removal spell aimed at her somewhere else. The protection red almost never gets. $72.89.
• Jeska's Will — GAME CHANGER. Mana for every card in an opponent’s hand plus three cards to play. Moves the deck to Bracket 3. $39.53.

How it closes games

Reign of Dragons wins in one of three ways, and all three start with Lathliss on the table. The first is the most common and the most explosive.

1. The entry turn. The board: Lathliss, Scourge of Valkas and Dragon Tempest. Cast Universal Automaton for one mana. Three things trigger — Tempest, Valkas and Lathliss — and you choose the order, so put Lathliss's trigger on top. It resolves first, the 5/5 token enters, and now you control four Dragons. The token's own Tempest and Valkas triggers go on the stack, and every one of the four damage triggers counts Dragons when it resolves: 4 × 4 = 16 damage, to any targets, for one mana. Follow it with Thunderbreak Regent and the same four triggers count six Dragons: 24 more. That is 40 damage — a whole opponent, from full life — without attacking. The order matters: resolve Lathliss's trigger last and the first two triggers count one Dragon fewer.

2. The air force. The board: Lathliss and two of her 5/5 tokens. Cast Terror of Mount Velus (seven mana; five with Dragonspeaker Shaman out), and again put Lathliss's trigger on top, so her new token is already on the battlefield when Terror's "creatures you control gain double strike" resolves. You now have 6 + 5 + 5 + 5 + 5 = 26 power of fliers with double strike — 52 damage in the air if everything can swing. That needs Dragon Tempest, which gives the two new arrivals haste; without it, the three that were already there still hit for 32. Every {1}{R} into Lathliss after blockers adds up to 10 more. With Utvara Hellkite out instead, the same attack makes a 6/6 for every Dragon that swings, and the next turn is lethal by default.

3. The burn-out. The board: Lathliss, Wrathful Red Dragon and two tokens. Cast Blasphemous Act, which costs {R} once there are eight creatures on the battlefield. It deals 13 damage to each creature, so each of your four Dragons is dealt 13 and each one deals 13 to any non-Dragon target — 52 damage at opponents' faces while the whole board dies, theirs included. Wrathful's trigger works even though it dies in the same damage event, because it triggers on the damage, not on leaving. Lathliss comes back from the command zone for eight. Chandra's Ignition is the softer version: aimed at Lathliss, she deals 6 to each other creature and to each opponent, Wrathful and the tokens each send their 6 onward, and Lathliss herself survives.

With Terror of the Peaks or Twinflame Tyrant in the list, line one gets silly: Terror adds 5 for every token, and Twinflame doubles every number in the paragraph above.

Against a sweeper or a stall

The deck's weakness is a board wipe after it has committed its hand, and the fix is mostly discipline. Lathliss plus one or two Dragons is already a fast clock; hold the rest. Every Dragon still in your hand after a wipe is two Dragons the turn Lathliss comes back, and the commander tax makes her second cast eight mana, which is exactly what Atsushi, the Blazing Sky's death mode (three Treasures) and the Ganax Treasures are for.

The box also rebuilds better than it looks. Outpost Siege on its Dragons mode deals 1 damage for every creature of yours that leaves, so a wipe on a wide board is a free volley. Haven of the Spirit Dragon returns a Dragon card from the graveyard. Skyline Despot and Dragonmaster Outcast make a 5/5 every upkeep without spending a card. Against spot removal, the answer is the two equipment pieces and, at the top end, Deflecting Swat.

Against a stall — a wall of flying blockers, a fog every turn, a tax on attacking — stop attacking. Tempest, Valkas, Terror of the Peaks and Wrathful all deal their damage outside combat, Drakuseth, Maw of Flames spreads ten points around just by declaring an attack, and line three never needed the red zone at all.

The suggested swaps

The whole budget tier plus the first four cards of the middle tier, one for one. Prices are October 23, 2026.

The deck keeps 38 lands. The cuts take out three cards at six mana or more and one at five; the adds are all five mana or less, and six of the twelve are Dragons that trigger Lathliss — Automaton, Mimic, Wrathful, Dracosaur, Ganax and Goldspan. If you have more to spend, Terror of the Peaks for Warstorm Surge is the next swap: the same effect, one mana cheaper, on a flier that triggers Lathliss.

Twelve swaps will not make Reign of Dragons a different deck, and they are not meant to. Its game plan was always right: get Lathliss down, make every Dragon count twice, and let the damage triggers do the rest. The upgrades just make sure there is a Dragon to cast on the turn after she lands, and a card to draw on the turn after that.

May your Dragons arrive two at a time, and may nobody at the table be holding the wrath.

See the Reign of Dragons decklist — All 100 cards on Manamancer — the list every count in this piece was made from.