Ignoble Oathbreaker

Indestructible, shroud
Ignoble Oathbreaker can't be sacrificed.
If a player would gain life, they lose half that
much life, rounded down instead.
Hellbent — Commander creatures you own
have double strike, deathtouch, lifelink, and
trample as long as you have no cards in hand.
Discard three cards: Transform Oathbreaker.