Mongrux, Unyielding Keeper

Whenever Mongrux enters the battlefield or
attacks, choose one:
- Exile target card from a graveyard
- Mongrux deals 1 damage to any target
- Target player mills a card
When Mongrux dies during your turn exile target
card from a graveyard, Mongrux deals 1 damage
to any target and target player mills a card then,
return Mongrux to the battlefield unless Mongrux
has died three or more times this turn.