Hidden Gibbons
Enchantment
When an opponent casts an instant spell, if this permanent is an enchantment, it becomes a 4/4 Ape creature.
When these apes want something, it's a matter of gibbon take.
Una Fricker
Urza's Legacy (ULG)
• #104Rulings
A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.
(wotc • 2008-08-01)
The ability triggers when the spell is cast, so it becomes a creature before the spell resolves.
(wotc • 2008-08-01)
It changes into a creature even if the spell is countered.
(wotc • 2004-10-04)
When it turns into a creature, it is no longer an enchantment.
(wotc • 2004-10-04)
Rulings
A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.
(wotc • 2008-08-01)
The ability triggers when the spell is cast, so it becomes a creature before the spell resolves.
(wotc • 2008-08-01)
It changes into a creature even if the spell is countered.
(wotc • 2004-10-04)
When it turns into a creature, it is no longer an enchantment.
(wotc • 2004-10-04)