Iona, Shield of Emeria

Legendary Creature - Angel 7/7, 6WWW (9)
Flying
As Iona, Shield of Emeria enters the battlefield, choose a color.
Your opponents can't cast spells of the chosen color.
No more shall the righteous cower before evil.
Illus. Jason Chan

Gatherer Card Rulings [Nov 2009]

• 10/1/2009: Iona's third ability includes permanent spells (artifacts, creatures, enchantments, and planeswalkers), not just instant and sorcery spells. It does not include lands or abilities (such as cycling or unearth).
• 10/1/2009: Once the color is chosen, it's too late for opponents to respond by casting spells of that color. Iona is not yet in the battlefield at the time the color is chosen, so, for example, there's no way for an opponent to destroy it by casting Doom Blade if the chosen color is black.

Format Legality	Legal in Vintage, Legacy, Extended, Standard
Printings (1/9)	Zendikar (Mythic Rare)