Syvia, God of the Shards

Indestructible, Hexproof.
Unless you control at least one creature of each color, Syvia isn't a creature.
Eminence - Whenever you cast a creature with two or more colors put a +1/+1 counter on it for each of its colors, at the beginning of your upkeep remove a +1/+1 counter from each creature you control, then for every counter removed this way gain 1 life.