Veil of Birds
Enchantment
When an opponent casts a spell, if this permanent is an enchantment, it becomes a 1/1 Bird creature with flying.
Printings & Conditions (1)
Urza's Saga (USG)(Urza's Saga)#106Common
Enchantment
When an opponent casts a spell, if this permanent is an enchantment, it becomes a 1/1 Bird creature with flying.