Mortigan's Apprentice

Other Angels and Knights you control get +2/+0.

Whenever a creature dealt damage by Mortigan’s Apprentice dies, put a summoning counter on it.

Remove 6 summoning counters from Mortigan’s Apprentice: Search your library, graveyard, and/or exile for Mortigan, Angel of Boros and put it into your hand. If you searched, shuffle your deck.