Ajani, God of Light

+7: Summon a 6/6 Suns avatar with hexproof or two 3/3 Shards of Sun's with deathtouch
-X: Exile X cards from your graveyard, target opponent discards X cards from their library
-18: You get an Emblem with " All your creatures have protection from everything, you can't lose unless Ajani, God of light isn't on the battlefield