Sae'Ilia, Brewing Anger

+2: Create a 1/1 blue Merfolk token.
-6: Create two 2/3 Merfolk tokens. All Merfolk you control have "Tap: add one blue mana to your mana pool."
-12: Tap all blue lands you control. For each land you tapped, search your deck for a blue creature and play it for free.