Aliana of the Reef

+1: Put a +1/+1 counter on target creature. If that creature already had a +1/+1 counter on it, draw a card.
0: Scry 3. Aliana of the Reef has hexproof until your next upkeep step.
-6: Search your deck for X Merfolk creature cards and put them onto the battlefield, where X is equal to the number of islands you control.