Ob Nixilis, Ruler of the Plain

Hexproof, Double Strike, Dementor II (when this Creature enters the battlefield gain control of 2 Target Demon or Imp)
When Ob Nixilis, Ruler of The Plain enters the battlefield create 2 3/3 Imp Tokens with Flying
if a Demon or Imp you control were to die target creature or player is dealt 5 Damage