Lightning Greaves [Duel Decks: Phyrexia vs. the Coalition] Pioneer An early inspiration for Urza

An early inspiration for Urza

Set: Modern Masters Type: Legendary Creature — Dragon Spirit Rarity: Mythic Cost: {4}{B}{B} Flying

Tocasia's Onulets contained magical essences that could be cannibalized after they stopped functioning

Set: Commander's Arsenal Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

If it's a creature card of the chosen type

Lightning Greaves [Duel Decks: Phyrexia vs. the Coalition] Pioneer An early inspiration for UrzaSet: Duel Decks: Phyrexia vs. the Coalition Type: Artifact Equipment Rarity: Uncommon Cost: {2} Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0} After lightning struck the cliffs, the ore became iron, the iron became steel, and the steel became greaves. The lightning never left.