Ryze, the Rune Mage

+2: Rune Prison: Tap target creature, that creature doesn't untap until the next untap step. If Ryze has just come out of realm warp tap 4 more.
-4: Realm Warp: Ryze, the Rune Mage enters exile until the start of the next turn. Add his current loyalty to his base loyalty when he returns.
-6: Overload: Destroy a tapped creature. For 4 mana destroy another tapped creature. Do this as many times as the player wants and has mana for.