Opal Champion

Enchantment, 2W (3)
When an opponent plays a creature spell, if Opal Champion is an enchantment, Opal Champion becomes a 3/3 Knight creature with first strike.¹
Illus. Edward P. Beard, Jr.

Crystal Keep Rulings Summaries

• When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]
• It changes into a creature even if the spell is countered. [D'Angelo 1999/05/01]
• It becomes a creature when the spell is played (which is when it is announced), which is before the spell resolves. A Cloudchaser Eagle cannot be used to destroy this card, since it will no longer be an enchantment when the Eagle comes into play. [Urza's Saga FAQ 1998/10/05]
• A creature spell is any "Creature" or "Artifact Creature" spell. [D'Angelo 1999/05/01] Older cards of type "Summon" are also Creatures.
• Note - Also see First Strike, Rule 502.2.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Urza's Legacy (Common)