Coma, Cosmos Serpent

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, Cosmos Serpent gains indestructible until end of turn.