Duel Decks: Merfolk vs. Goblins

Protection from red Elemental creatures you control get +1/+1. When this creature enters, create a number of 1/0 blue Elemental creature tokens equal to your devotion to blue. (Each U in the mana costs of permanents you control counts toward your devotion to blue.)

Double strike Whenever this creature deals damage to an opponent, you may put a Goblin creature card from your hand onto the battlefield.