Megumin, Arch-Wizard

{4}{r}{r}{r}{t}, sacrifice Megumin, Arch-Wizard: Megumin, Arch-Wizard deals 15 damage to target player and all creatures that player
controls. Sacrifice all lands you control at the beggining of the next end step. This ability cost {4} less to cast if you control a rogue, a knight and a cleric with different names.