Opal Titan

{2}{W}{W} · Enchantment

When an opponent casts a creature spell, if this permanent is an enchantment, it becomes a 4/4 Giant creature with protection from each of that spell's colors.

Motor: se resuelve a mano

Rulings (6)

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.
Wizards of the Coast · 2008-08-01
A "creature spell" is any spell with the type Creature, even if it has other types such as Artifact or Enchantment. Older cards of type Summon are also Creature spells.
Wizards of the Coast · 2008-04-01
If the spell was colorless (an artifact), this card does not get any form of Protection.
Wizards of the Coast · 2004-10-04
It changes into a creature even if the spell is countered.
Wizards of the Coast · 2004-10-04
It triggers when the spell is cast, which means it becomes a creature before that spell resolves.
Wizards of the Coast · 2004-10-04
When it turns into a creature, it is no longer an enchantment.
Wizards of the Coast · 2004-10-04