Exultig, Nighttime Graveyard

Indestructible, lifelink
Exultig, Nighttime Graveyard is not a creature
unless you control two or more enchantments.
{10}{b}{b}: Target creature becomes an
enchantment called Graveyard Apocalypse with
"Target creature becomes a 10/10 Nauseous
Zombie creature with "This creature is not a
creature unless your devotion to black is 8 or
more."