Ecelmyrin, Mother of Divinity

Indestructible
This creature is all colors.
This creature enters the battlefield tapped and
does not untap during your untap step.
As long as this creature is tapped, you and all permanents you control have hexproof.
Whenever you cast a creature spell, you may
tap or untap this creature.
Whenever this creature becomes untapped, you
may destroy target nonland permanent.