Arzakon [Mystery Booster: Commander Edition]

+2: Arzakon deals 3 damage to any other target.
−3: Create a Black Lotus token. (It's a {0} artifact with "{T}, Sacrifice this token: Add three mana of any one color.")
−7: Each player shuffles their hand and graveyard into their library, then draws seven cards.
Arzakon can be your commander.