Master of Waves [Duel Decks: Merfolk vs. Goblins] Human Mercenary you may return target artifact

you may return target artifact card from your graveyard to your hand

When Malfegor enters the battlefield

Set: New Phyrexia Type: Artifact Creature — Wall Rarity: Uncommon Cost: {1}{W/P} ({W/P} can be paid with either {W} or 2 life

Clients who cheat the sailmonger make an impact on the rest

Set: Invasion Type: Instant Rarity: Uncommon Cost: {3}{U} Counter target noncreature spell

Master of Waves [Duel Decks: Merfolk vs. Goblins] Human Mercenary you may return target artifactSet: Duel Decks: Merfolk vs. Goblins Type: Creature Merfolk Wizard Mythic Cost: {3}{U} Protection from red Elemental creatures you control get +1 +1. When Master of Waves enters the battlefield, 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.)