Rainbow Serpent

Domain Whenever a land you control enters, if this card is a creature, put a flood counter on it. Whenever a flood counter is put on a land you control, Chromacoatl deals 1 damage to each creature with flying and each opponent if it is a creature, otherwise, remove a slumber counter from this creature. At the beginning of your upkeep, each opponent discards a card, and you draw a card. When this creature dies, if it was a nontoken creature, return it to the battlefield under it’s owners control as a basic Island with 3 slumber counters.