Indestructible
As long as your devotion to red, white and black is less than nine, Karda isn't a creature.
Whenever you attack, creatures you control get +2/+1 until end of turn. At the end of combat, if Karda dealt combat damage to a player, sacrifice him, then search your library and/or graveyard for a card named Iroas, Honor-Bound and a card named Mogis, Rage-Crowned and put them onto the battlefield, then shuffle.