Iona, Shield of Emeria [Zendikar] Dinosaur Whenever a basic land is

Whenever a basic land is tapped for mana of the chosen color

Set: Portal Three Kingdoms Type: Creature — Ox Rarity: Uncommon Cost: {3}{G} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

Set: Urza's Destiny Type: Enchantment — Aura Rarity: Rare Cost: {3}{U}{U} Enchant creature

among any of the creatures it's being blocked by or is blocking

and that spell can't be countered

Iona, Shield of Emeria [Zendikar] Dinosaur Whenever a basic land isSet: Zendikar Type: Legendary Creature Angel Rarity: Mythic Cost: {6}{W}{W}{W} 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.