Mantle of the Abyss

When Mantle of the Abyss enters the battlefield,
you gain 2 life.
Enchanted creature gets +0/+1 and has
skulk.
{t}: Target creature becomes green, white, or
green and white until end of turn.
{1}{u}: Mantle of the Abyss becomes an aura enchantment in addition to its other types
with "Enchant black or blue creature." {1} must
be paid for with {u},{b}, or {c} mana.