{R} Koma, Cosmos Serpent (Borderless) - The Monstrous Serpent [Avatar The Last Airbender EternalLegal] [TLE 051]

This spell can’t be countered.

At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma’s Coil.

Sacrifice another Serpent: Choose one —

• Tap target permanent. Its activated abilities can’t be activated this turn.

• Koma gains indestructible until end of turn.