The gods imprisoned Koma, fearing he would eventually devour the Cosmos itself.

Koma, World-Eater

This spell can't be countered.
Trample, ward {4}
Whenever Koma deals combat damage to a player, create four 3/3 blue Serpent creature tokens named Koma's Coil.

Foundations Promos

Foundations

A spell or ability that counters spells can still target Koma. When that spell or ability resolves, Koma won't be countered, but any additional effects of the countering spell or ability will still happen.