When an opponent casts a spell, if this permanent is an enchantment, it becomes an Illusion creature with power and toughness each equal to that spell's mana value.
Legalities
Legal
Duel
Predh
Legacy
Vintage
Commander
Premodern
Oathbreaker
Not Legal
Brawl
Penny
Future
Modern
Pauper
Alchemy
Pioneer
Explorer
Historic
Standard
Timeless
Gladiator
Oldschool
Standardbrawl
Paupercommander
Rulings
2004-10-04
It changes into a creature even if the spell is countered.