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Enchant creature Enchanted creature gets +3/+3. At the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that creature.
Abilities, attacks, weakness & resistance
Other cards from Foreign Black Border
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Unstable Mutation (FBB-86) is an Enchantment — Aura from the Foreign Black Border set that enchants a creature. It grants the enchanted creature +3/+3 while imposing a recurring downside by placing a -1/-1 counter on that creature at the beginning of its controller's upkeep. This creates a tempo-style tradeoff where the creature is boosted immediately but will degrade over subsequent turns as counters accumulate.
Catalog pricing data as of 17 Apr 2026, 12:56
