The Lost Castle of Lockhaven

When The Lost Castle of Lockhaven enters the battlefield, pick one:
•Unicorns: At the beginning of each upkeep,
target creature gains lifelink until end of turn.
•Vampires: At the beginning of each upkeep,
target creature gains deathtouch until end of turn.
At the beginning of your endstep, pick a creature
card at random from a graveyard. Exile it face-
down with 3 time counters on it. It gains suspend.