Shield of Kaldra [Darksteel] Urza's Destiny Creatures can't attack you unless

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you

create seven 3/3 green Elemental creature tokens instead

Set: Limited Edition Beta Type: Instant Rarity: Rare Cost: {U} Change the text of target spell or permanent by replacing all instances of one basic land type with another

Set: Pro Tour Promos Type: Legendary Creature — Dragon Rarity: Rare Cost: {3}{G}{W}{U} Flying

Shield of Kaldra [Darksteel] Urza's Destiny Creatures can't attack you unlessSet: Darksteel Type: Legendary Artifact Equipment Rare Cost: {4} Equipment named Sword of Kaldra, Shield of Kaldra, and Helm of Kaldra have indestructible. Equipped creature has indestructible. (Damage and effects that say "destroy" don't destroy it.) Equip {4}