Reign of Dragons upgrade guide, the Foundations Commander Lathliss precon
Reign of Dragons is the mono-red deck in the Foundations Commander line. $29.99, out since October 2 beside Reality Fracture. Lathliss, Dragon Queen leads it. It is built for new players, and it plays like it.
We ran the stock list through our bracket analyzer. Bracket 2, estimated win around turn 8.4. Zero Game Changers, zero tutors, one fast mana source (Sol Ring), zero combos. The analyzer reads it as a Dragon tribal flying deck, which is exactly what it is.
Lathliss has been around since 2018, so EDHREC already has 4,891 Lathliss decks. Every swap below comes from what those decks play and what they leave out. Every tier was run through the same analyzer, three times each.
How the deck works
Cast Dragons. Get more Dragons for free. Hit people in the air.
Lathliss costs six and is a 6/6 flier. Whenever another nontoken Dragon enters under your control, you also get a 5/5 flying Dragon token. So every Dragon you cast is really two Dragons. Her other ability is {1}{R} to give all your Dragons +1/+0, which adds up fast when you have five of them.
The rest of the deck does three jobs.
- Make Dragons cheaper. Dragonlord's Servant and Nogi each knock a mana off every Dragon, and Dragonspeaker Shaman knocks off two. Herald's Horn and the Orbs of Dragonkind help too.
- Punish people when Dragons arrive. Scourge of Valkas and Dragon Tempest deal damage every time a Dragon enters, and Lathliss's tokens count. One Dragon cast with Lathliss out can mean two triggers each.
- Make the Dragons huge. Crucible of Fire gives them +3/+3. Utvara Hellkite makes a 6/6 every time one attacks.
The weak spot is the turns before Lathliss. Most of your threats cost five or more. If you don't draw ramp, you spend turns three and four doing very little. The upgrades below mostly fix that, and add removal that doesn't hit your own fliers.
The stock decklist
Commander (1)
- Lathliss, Dragon Queen
Creatures (27)
- Anger
- Atsushi, the Blazing Sky
- Dragonhawk, Fate's Tempest
- Dragonlord's Servant
- Dragonmaster Outcast
- Dragonspeaker Shaman
- Drakuseth, Maw of Flames
- Firespitter Whelp
- Goddric, Cloaked Reveler
- Goldlust Triad
- Hellkite Charger
- Leyline Tyrant
- Minion of the Mighty
- Nogi, Draco-Zealot
- Parapet Thrasher
- Rapacious Dragon
- Sarkhan, Dragon Ascendant
- Scourge of Valkas
- Scourge of the Throne
- Shivan Devastator
- Skyline Despot
- Taurean Mauler
- Terror of Mount Velus
- Thunderbreak Regent
- Thundermane Dragon
- Tyrant's Familiar
- Utvara Hellkite
Instants (8)
- Abrade
- Breath Weapon
- Chaos Warp
- Lightning Bolt
- Magmaquake
- Spit Flame
- Thrill of Possibility
- Unexpected Windfall
Sorceries (5)
- Blasphemous Act
- Chain Reaction
- Chandra's Ignition
- Hit the Mother Lode
- Mana Geyser
Enchantments (8)
- Bitter Reunion
- Breaching Dragonstorm
- Count on Luck
- Crucible of Fire
- Dragon Tempest
- Outpost Siege
- The Elder Dragon War
- Warstorm Surge
Artifacts (13)
- Arcane Signet
- Basilisk Collar
- Carnelian Orb of Dragonkind
- Commander's Sphere
- Cursed Mirror
- Dragon's Hoard
- Dragonstorm Globe
- Fire Diamond
- Hazoret's Monument
- Herald's Horn
- Orb of Dragonkind
- Sol Ring
- Swiftfoot Boots
Lands (38)
- Bonders' Enclave
- Forgotten Cave
- Haven of the Spirit Dragon
- 32 Mountain
- Spinerock Knoll
- Temple of the False God
- War Room
Open the stock list in the analyzer.
What to cut first
EDHREC shows which stock cards Lathliss players leave out. These are the lowest inclusion rates in the deck.
| Card | In Lathliss decks |
|---|---|
| Goddric, Cloaked Reveler | 5.7% |
| Hit the Mother Lode | 10.6% |
| Basilisk Collar | 11.7% |
| The Elder Dragon War | 11.8% |
| Bitter Reunion | 14.1% |
| Count on Luck | 15.0% |
| Chandra's Ignition | 16.5% |
| Anger | 16.7% |
One caveat. Most of those 4,891 decks were built before this precon existed, so a newer card can look rarer than it deserves. The cuts still hold up on their own. Goddric is only a Dragon on turns you've already played two permanents, so he almost never enters as one and almost never triggers Lathliss. Basilisk Collar wants a pinger, and the deck has none. Anger only gives haste from the graveyard, so it has to die or get discarded first. Chain Reaction (19.9%) is worse than it looks. It kills your own Dragons too.
Tier 1. About $10, the day-one swaps
Seven swaps for $9.61. This is the tier we would do on day one.
| Cut | Add | Why |
|---|---|---|
| Goddric, Cloaked Reveler | Ganax, Astral Hunter | In 68.5% of Lathliss decks, the most-played card the precon skips. A Treasure every time a Dragon enters. |
| Hit the Mother Lode | Dragon's Fire | Seven mana for a random card becomes two mana of removal. With a Dragon in hand or on the board, it deals that Dragon's power instead of 3. |
| Basilisk Collar | Desolation of Smaug | 3 damage to every non-Dragon creature, then four mana for Dragons. A wipe that ramps you. |
| Anger | Steel Hellkite | A Dragon that blows up whatever your opponents have at one mana value after it connects. |
| Count on Luck | Earthquake | Hits every creature without flying, and your Dragons all fly. It hits every player too, so watch your own life. |
| Chain Reaction | Thundermaw Hellkite | Swap a wipe that kills your board for a hasty 5/5 that taps their fliers. |
| Bitter Reunion | Demanding Dragon | Another Dragon to trigger Lathliss. The opponent you pick takes 5 or loses a creature. |
The analyzer still says Bracket 2, around turn 8.4. Speed stays put. What changes is that two of your sweepers now leave your fliers alone, and Ganax pays you back for every Dragon you cast. With Lathliss out, that's two Treasures a Dragon.
Open the tier 1 list in the analyzer.
Tier 2. About $23 more, the Lathliss package
Five more swaps for $22.91. These are the cards Lathliss decks lean on most.
| Cut | Add | Why |
|---|---|---|
| The Elder Dragon War | Sarkhan, Fireblood | In 41% of decks. Two mana for Dragons every turn, or loot. His -7 is four 5/5 Dragons. |
| Chandra's Ignition | Wrathful Red Dragon | In 53.1%. When a Dragon takes damage, it deals that much to any non-Dragon target. Blasphemous Act turns into 13 damage per Dragon. |
| Outpost Siege | Hellkite Tyrant | In 46.1%. Connects and takes every artifact that player controls. Their mana rocks become yours. |
| Forgotten Cave | Crucible of the Spirit Dragon | Land for land. Stores up mana for a big Dragon turn. |
| Taurean Mauler | Ryusei, the Falling Star | A six-drop flier. When it dies, it deals 5 to every creature without flying. |
Still Bracket 2, now around turn 8.3.
We first had Maelstrom of the Spirit Dragon in that land slot. It's in 29.9% of decks, but it can sacrifice itself to search for a Dragon, and the analyzer counts that as a tutor. Crucible does the mana half of the job without the search.
Open the tier 2 list in the analyzer.
Tier 3. About $61 more, the damage engine
Three more swaps for $60.92. This tier is where Lathliss starts ending games off a single Dragon.
| Cut | Add | Why |
|---|---|---|
| Breath Weapon | Terror of the Peaks | In 52%. Every creature that enters deals its power to any target. Each Lathliss token is 5 more damage. |
| Goldlust Triad | Twinflame Tyrant | In 38.5%. Doubles all the damage you deal to opponents and their stuff. Scourge, Tempest and Terror all double. |
| Cursed Mirror | Stormscale Scion | Other Dragons get +1/+1. Cast it after a spell or two and storm makes extra copies. |
Still Bracket 2, around turn 8.2. Cast one Dragon with Lathliss, Terror and Scourge of Valkas out, and you're throwing around 20 damage before combat.
Two popular cards are missing on purpose. Goldspan Dragon (56.5%) and Urza's Incubator (38.1%) are both great here. We tested each one on its own on top of tier 2. Each one pushes the estimate to about turn 7.6 or 7.7, under our Bracket 3 line at turn 8. If your table is fine with Bracket 3, add them. If you want this deck to stay a Bracket 2 deck, leave them out.
Open the tier 3 list in the analyzer.
Take it to Bracket 3
If you've outgrown the precon and play at Bracket 3 tables, that means Game Changers. Three are allowed. These are the three Lathliss players actually run.
| Cut | Add | Why |
|---|---|---|
| Unexpected Windfall | Jeska's Will | In 26.2%. A pile of red mana plus up to three cards off the top. The best ritual in red. |
| Thrill of Possibility | Gamble | In 8.3%. Find Terror of the Peaks or Twinflame Tyrant, then discard a random card. A real tutor. |
| Temple of the False God | Ancient Tomb | In 9.0%. Land for land, but this one taps for two on turn one. |
Bracket 3, estimated win around turn 6.5. The analyzer flags all three as Game Changers. That's the Bracket 3 limit, so add a fourth and the deck is Bracket 4 by the rules. Still no combos.
This tier costs $178.96, and Ancient Tomb is $119.18 of it. If that's too much, skip it. Jeska's Will and Gamble together are under $60.
Open the Bracket 3 list in the analyzer.
The numbers
| List | Bracket | Est. win turn | Game Changers | Added cost |
|---|---|---|---|---|
| Stock | 2 | 8.4 | 0 | - |
| Tier 1 | 2 | 8.4 | 0 | $9.61 |
| Tier 2 | 2 | 8.3 | 0 | +$22.91 |
| Tier 3 | 2 | 8.2 | 0 | +$60.92 |
| Bracket 3 | 3 | 6.5 | 3 | +$178.96 |
Analyzer runs and prices from our app and Scryfall on October 13, 2026. EDHREC inclusion out of 4,891 Lathliss decks.
The other Foundations Commander decks
- Calling All Angels, Giada
- Keen Engineering, Sai
- Wretched Ranks, Ghoulcaller Gisa
- Tramplesaurus Rex, Ghalta
Upgrade yours
Your copy probably doesn't look exactly like ours after a few games. Paste your list into the bracket checker and it tells you where you landed. If you link your collection, you can tell our upgrade and build tools to use cards you already own first.
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