+Demigod (2)
When you cast this spell, return all cards named Demigod of Revenge from your graveyard to the battlefield.
Flying, haste
Enchant creature
As long as enchanted creature is black, it gets +1/+1 and has wither. (It deals damage to creatures in the form of -1/-1 counters.)
As long as enchanted creature is red, it gets +1/+1 and has first strike.
Gatherer works better in the Companion app!