Janemba, Living Evil

Indestructible, Zenkai 1

{t} Sacrifice a demon. Janemba, Living Evil deals damage equal to it's power to all players. Zenkai Boost. (Only cards with Zenkai 1 can be your commander. If a card with Zenkai 1 is your commander, you may have a Zenkai Deck containing one copy of each additional form for that character. When Zenkai Boosting, place the boosted card into the Zenkai Deck, and select a card with a Zenkai level 1 above or below the boosted cards level. The selected card is now your commander.)