Koma, 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 permenent. Its activated abilities can't be activated this turn
• Koma, Cosmos Serpent gains indestructible untile end of turn