Pure Vessel

Flash, First Strike, Vigilance, Protection from multicolored, Devoid, Cannot be countered.
When Pure Vessel enters, draw X cards, where X is 3-the different colors of mana spent to cast it.

Whenever Pure Vessel attacks, choose one: it gains double strike until end of turn, or destroy target enchantment. Then if it attacked alone it gains indestructible and lifelink until end of turn.

Wake up — When this creature dies, may exile it then search your library or graveyard for The Hollow Kni