Krake, Foe of the Fiends

+2: Krake, Foe of the fiends deals 3 damage to target creature. If that creature is a Demon, deal 5 damage instead.
-2: Tap up X target creatures. Choose one of them. that creature doesn't untap during its owner's untap step.
-7: Creatures you control get +1/+1 and gain islandwalk until, end of turn.