Erebos's Emissary
{3}{B}
Enchantment Creature -- Snake
3/3
Bestow {5}{B} (If you cast ~this~ for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Discard a creature card: ~this~ gets +2/+2 until end of turn. If ~this~ is an Aura, enchanted creature gets +2/+2 until end of turn instead.
Enchanted creature gets +3/+3.