Phyrexian Boon
Enchantment - Aura (CMC 3)
Enchant creature
Enchanted creature gets +2/+1 as long as it's black. Otherwise, it gets -1/-2.
Decks with Phyrexian Boon
[ALL] Alliances #58a (C)
[ALL] Alliances #58b (C)
[ME1] Masters Edition #81 (C)