Unstable Mutation

one blue mana Enchantment — Aura

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.

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Unstable Mutation rulings

2005-08-01
The -1/-1 counters stay even if the Aura is removed, and the +3/+3 goes away when the Aura does.

Unstable Mutation keyword rules

Enchant Rule 702.5

Enchant is a static ability, written “Enchant [object or player].” The enchant ability restricts what an Aura spell can target and what an Aura can enchant.

For more information about Auras, see rule , “Enchantments.”

If an Aura has multiple instances of enchant, all of them apply. The Aura’s target must follow the restrictions from all the instances of enchant. The Aura can enchant only objects or players that match all of its enchant abilities.

Auras that can enchant a player can target and be attached to players. Such Auras can’t target permanents and can’t be attached to permanents.