Is Koma, World-Eater good in Commander?

Koma, World-Eater in Commander — Combos, Decks & Price

Koma, World-Eater lands on the table and immediately threatens to eat a permanent every turn — that kind of repeating, hard-to-answer pressure is exactly what seven mana buys you in Commander. The cost is real: you need a deck that can reliably hit that mana threshold, but Kenessos, Priest of Thassa cheats it into play off the top of the library and erases the problem entirely.

Best Commanders

Commanders with the highest synergy

01

Kenessos, Priest of Thassa

79.5% of decks · synergy 0.67

Kenessos, Priest of Thassa exists to slam the biggest Serpents in the format for free, and Koma, World-Eater is one of the premier targets — cast-for-free, immediate threat, and it rewards the Serpent tribal shell Kenessos already wants to build around.

02

Kiora, Sovereign of the Deep

75.2% of decks · synergy 0.63

Kiora, Sovereign of the Deep cares about Krakens, Leviathans, Octopuses, and Serpents, and Koma, World-Eater hits that creature type while delivering the kind of game-ending pressure Kiora's big-sea-creature strategy is built to close with.

03

Koma, Cosmos Serpent

65.1% of decks · synergy 0.53

Koma, Cosmos Serpent leans into the obvious thematic overlap, but the mechanical reason is just as strong — Koma, World-Eater is a high-impact, on-theme threat that fits the Simic big-mana shell Cosmos Serpent decks already assemble.

04

Peter Parker

37.3% of decks · synergy 0.34

Peter Parker generates value by dealing combat damage with small creatures, and Koma, World-Eater provides a large, threatening finisher that converts the mid-game advantage Peter Parker builds into a board state opponents can't ignore.

05

Felix Five-Boots

33.1% of decks · synergy 0.30

Felix Five-Boots rewards running powerful, evasive threats that benefit from extra combat steps and counters, and Koma, World-Eater's enter-the-battlefield and attack triggers scale aggressively when Felix Five-Boots puts additional resources on it.

Format Analysis

Where it lives, where it can’t

Format	Verdict
commander	legal
legacy	legal
modern	legal
pioneer	legal
standard	legal
vintage	legal
pauper	not legal
oathbreaker	legal

Koma, World-Eater is legal in every major constructed format but its home is Commander, where seven mana is achievable by turn four or five in most powered mana bases and a repeating permanent-destruction threat dominates the table. In competitive 60-card formats like Modern and Pioneer, a seven-mana creature with no immediate protection is too slow — it needs to survive a full turn cycle to generate value, and those formats punish that window harshly. Legacy and Vintage have access to it but have no reason to reach for it when faster, cheaper threats exist. Commander is the only format where Koma, World-Eater's power level matches the pace of play, particularly in Serpent tribal, Simic ramp, or any shell that can cheat it into play.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.43 bulk tier

At $0.43, Koma, World-Eater is firmly bulk despite being a legitimate Commander threat in the right shell. That price reflects low casual demand rather than low power — if Serpent tribal or big-mana Simic decks see a surge in popularity, this is the kind of card that creeps upward, but right now it's easy to pick up without thinking twice about the cost.