HooTras, Eternal Piligrim

Hexproof, devoid
Whenever you cast an instant or sorcery spell,
shuffle it into your library at the next end step.
Whenever creature you don't control leaves the
battlefield, exile it with a piligrim counter on it
{4}{w}{u}{b}{t}: return each creature with
piligrim counter on it from exile to the battlefield
under your control