You may cast Armor of Thorns as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.
Enchant nonblack creature
Enchanted creature gets +2/+2.
You may choose to play Armor of Thorns as an instant; if you do, bury it at end of turn.
Play only on a nonblack creature.
Enchanted creature gets +2/+2.
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