The Ur-Dragon's Precon Is 22 Cents From Infinite. Here's the One Card for Eight More
The Ur-Dragon's 2017 precon has played Hellkite Charger for nine years. A 22-cent Sun Warriors turns it into endless combats. We ran all 174 Commander precons in our database through DeckCortex's combo engine, then checked the best lines by hand: here's the one card for nine old precons, most of them under a dollar, and the four "infinite" fixes that don't work in the box.
Seven creatures on your side of the table, and two of them are Hellkite Charger and a Sun Warriors you paid 22 cents for. Both attack. Sun Warriors' firebending adds one red mana for every creature you control, so seven. Hellkite Charger asks for to untap all your attackers and give you another combat. You pay it with exactly that mana, and the next combat does it all again.
Hellkite Charger has been in Draconic Domination, The Ur-Dragon's own precon, since 2017. The deck just never had the other half.
We ran all 174 Commander precons in the DeckCortex database through our combo engine, the same one a deck page uses. 153 of them ship without a complete infinite combo, and for 148 of those the engine finds an infinite that's missing exactly one card. That number is generous, though. The engine doesn't check the board states Commander Spellbook attaches to many lines, and some of its "infinites" only mill you or make one creature huge for a turn. So we took fifteen precons, most of them behind commanders in EDHREC's top 75, and checked every line against the card text. These nine work.
| Precon (year) | Face commander | Add | Cheapest copy | What it does | Also needs | |---|---|---|---|---|---| | Draconic Domination (2017) | The Ur-Dragon | Sun Warriors | $0.22 | endless combats | 7 creatures | | Vampiric Bloodlust (2017) | Edgar Markov | Astarion, the Decadent | $0.49 | kills one opponent | Astarion out by your end step | | Elven Empire (2021) | Lathril, Blade of the Elves | Sword of the Paruns | $0.83 | infinite green mana | 4 Elves | | Food and Fellowship (2023) | Frodo + Sam | Basking Broodscale | $0.21 | infinite mana and tokens | — | | Plunder the Graves (2015) | Meren of Clan Nel Toth | Basking Broodscale | $0.21 | infinite mana and counters | — | | Abzan Armor (2025) | Felothar the Steadfast | Hyalopterous Lemure | $0.05 | kills one opponent | — | | Revival Trance (2025) | Terra, Herald of Hope | Murderous Redcap | $1.61 | infinite counters | trigger order | | Riders of Rohan (2023) | Éowyn, Shieldmaiden | Rionya, Fire Dancer | $0.47 | endless combats | — | | Silverquill Influence (2026) | Killian, Decisive Mentor | Abdel Adrian, Gorion's Ward | $0.27 | infinite tokens | Abdel in your graveyard |
Draconic Domination: 22 cents for endless combats
Sun Warriors reads "Firebending X, where X is the number of creatures you control," and the reminder text matters: whenever it attacks, you add that much , and the mana lasts until end of combat. Firebending is a trigger, so put it on the stack above Hellkite Charger's trigger. It resolves first, and Charger's is already paid for. Charger untaps all your attackers, the extra combat starts, and both attack again.
You need seven creatures, counting the two pieces, and Sun Warriors can't be summoning sick. Draconic Domination plays 33 creatures, so this is a midgame line, not a turn-four one. If Utvara Hellkite from the same box is out, every attacking Dragon also makes a 6/6 Dragon token each combat. And if The Ur-Dragon is on the battlefield, its attack trigger draws cards every combat, so stop paying once the table is dead or you'll deck yourself.
Vampiric Bloodlust: one opponent, two cards
This one isn't a loop, but it's the cheapest way to make Edgar Markov's 2017 precon kill someone. Blood Tribute is already in the box: target opponent loses half their life, rounded up. Add Astarion, the Decadent (49 cents for the cheapest printing), and at your end step his Feed mode makes that same opponent lose "life equal to the amount of life they lost this turn." Half, then the same half again. From any life total, they're at zero.
It costs six mana for each card, and Astarion has to be on the battlefield when your end step begins. Combo databases label it "infinite lifeloss." It's a two-card kill of one player, and the rest of the table keeps playing.
Elven Empire: Lathril's finisher, with an 83-cent Equipment
Elvish Archdruid taps for one green mana for each Elf you control. Sword of the Paruns says ": You may tap or untap equipped creature," with no timing restriction. With four Elves, every untap costs three and gives back four. The cheapest Sword is 83 cents.
Getting there costs seven mana ( for the Sword, to equip it), and the Archdruid can't be summoning sick. Make all your mana first. Then move the Sword to Imperious Perfect and untap it over and over for Elf tokens. Then move it to Lathril, Blade of the Elves: ", Tap ten untapped Elves you control: Each opponent loses 10 life," untap her with the Sword, repeat. Imperious Perfect and Lathril have to have been on the battlefield since your turn started. The tokens don't.
One 21-cent Eldrazi fixes two precons
Basking Broodscale has two halves that matter: ": Adapt 1," and "Whenever one or more +1/+1 counters are put on this creature, you may create a 0/1 colorless Eldrazi Spawn creature token" that sacrifices for . Two old precons already own the other half of the loop.
Food and Fellowship (2023). Rosie Cotton of South Lane: "Whenever you create a token, put a +1/+1 counter on target creature you control other than Rosie Cotton." Cast Rosie with Broodscale out, and her Food token starts it. The counter goes on Broodscale, Broodscale makes a Spawn, the Spawn is a token, and Rosie triggers again. You get as many Spawns as you want, which is as much colorless mana as you want. Mirkwood Bats is in the same box: "Whenever you create or sacrifice a token, each opponent loses 1 life." That's the table.
Plunder the Graves (2015). Mazirek, Kraul Death Priest: "Whenever a player sacrifices another permanent, put a +1/+1 counter on each creature you control." Sacrifice a Spawn for mana and every creature you control gets a counter, Broodscale included, so it makes another Spawn. Start it with the adapt or any sacrifice. You end with infinite mana and every creature as big as you like. Jarad, Golgari Lich Lord in the box finishes it with one activation: "Each opponent loses life equal to the sacrificed creature's power."
Both loops are optional, because Broodscale says "may." Stop whenever you want.
Abzan Armor: five cents, one opponent
Jaws of Defeat is in Felothar's box: "Whenever a creature you control enters, target opponent loses life equal to the difference between that creature's power and its toughness." Hyalopterous Lemure is a five-cent 4/3 with ": This creature gets -1/-0 and gains flying until end of turn."
Cast the Lemure. While the Jaws trigger is on the stack, activate the as often as you like. Power can go below zero, and the difference keeps growing: 41 activations leave a −37/3, and the opponent you targeted loses 40. It's one trigger, so pick your target before you start.
Revival Trance: Terra's loop, if you stack it right
Murderous Redcap deals damage equal to its power to any target when it enters, and has persist. Celes, Rune Knight is in the box: "Whenever one or more other creatures you control enter, if one or more of them entered from a graveyard … put a +1/+1 counter on each creature you control."
Point Redcap's damage at itself. It dies, persist brings it back with a −1/−1 counter, and it came from the graveyard, so Celes triggers. Let Celes resolve first. The +1/+1 counter cancels the −1/−1, Redcap is a clean 2/2, it hits itself again, dies with no −1/−1 counter, and persists again. If Redcap's trigger resolves first, it dies with the counter and the loop is over. Every lap puts a counter on all your other creatures. Gau, Feral Youth deals damage equal to its power to each opponent at end step if a card left your graveyard this turn, and Gau now has as many counters as you like. The cheapest Redcap outside The List is $1.61; a copy from The List is $1.22.
Riders of Rohan: endless combats, and an engine error
Rionya, Fire Dancer (47 cents) makes hasty token copies of another creature at the beginning of combat. Copy Combat Celebrant and exert the token as it attacks: "untap all other creatures you control and after this phase, there is an additional combat phase." The next combat, Rionya makes a fresh copy that hasn't been exerted. Your whole team untaps and attacks every combat.
Our engine claims this precon already has an infinite: Gilraen, Dúnedain Protector and Village Bell-Ringer. That line needs creatures that tap for at least two mana, and Riders of Rohan has no mana creatures. So it has none, and Rionya is the card that gives it one.
Silverquill Influence: Abdel and Animate Dead
Animate Dead is in Killian's box. Add Abdel Adrian, Gorion's Ward (27 cents). Animate Dead returns Abdel. Abdel exiles Animate Dead "until Abdel Adrian leaves the battlefield" and makes a Soldier. Animate Dead leaving makes you sacrifice Abdel, Abdel leaving brings Animate Dead back, and it reanimates him again. You get infinite 1/1 Soldiers and infinite enchantments entering. Doomwake Giant gives your opponents' creatures −1/−1 every time one enters, so their board is gone. The catch is that Abdel has to be in your graveyard first, so he usually has to die once.
Four traps the combo lists won't warn you about
- Peace Offering + Gauntlets of Light. Ms. Bumbleflower's 2024 precon shows up as one 15-cent card from infinite mana with Faeburrow Elder. The Elder taps for one mana per color among your permanents, and the Gauntlets' untap costs three. In a four-color deck that nets a mana every time. Peace Offering has three colors, so the loop gains nothing.
- Crackdown Construct. 28 cents, and our engine lists it as the one-card fix in 46 precons, mostly next to Lightning Greaves. The result is a creature that's huge until end of turn, with haste and no trample. One chump block answers it.
- Tidespout Tyrant + Sol Ring. It shows up as the fix in 81 precons. The line needs a third permanent you can cast with colorless mana. With a permanent it's an infinite storm count but no extra mana. Only a permanent makes it infinite mana.
- Mirror-Mad Phantasm. It's the fix in 35 precons, and all it does is mill your own library.
What it does to your bracket
Every line above is two named cards, and the moment you buy the second one it's intentional. The bracket rules for Brackets 1 and 2 say "No intentional two-card infinite combos." Astarion and the Lemure aren't loops, so that wording doesn't cover them, but a two-card kill is exactly what your pod wants to hear about. Adding any of these cards turns "it's a precon" into a Bracket 3 conversation. That isn't a reason not to do it. It's what you tell your pod before the game.
Before you buy anything, put your list into DeckCortex. It shows the combos it finds and the bracket, and now you know which lines to check by hand.
Data: DeckCortex combo engine (local Commander Spellbook mirror) on every ingested precon decklist, 185 lists = 174 distinct products (Collector's Editions and reprints counted once), run 2026-10-21. "One card away" = Spellbook's "almost included" with one named card missing; our engine doesn't model Spellbook's board-state prerequisites, so per-deck claims were checked line by line against Spellbook and the Oracle text. Prices: cheapest current paper printing outside The List on Scryfall, 2026-10-21; prices move. Commander popularity: EDHREC, 2026-10-21 (casual decklists, not DeckCortex metagame data).