Lightning Greaves [Kaladesh Inventions] Water[+30] Set: Urza's Legacy Type: Artifact

Set: Urza's Legacy Type: Artifact Rarity: Rare Cost: {5} {T}

Set: Eventide Type: Legendary Creature — Elemental Shaman Rarity: Rare Cost: {2}{B}{B} Whenever Ashling

Set: Sun & Moon: Cosmic Eclipse Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

it's an artifact creature with power and toughness each equal to its mana value

Lightning Greaves [Kaladesh Inventions] Water[+30] Set: Urza's Legacy Type: ArtifactSet: Kaladesh Inventions Type: Artifact Equipment Rarity: Mythic Cost: {2} Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0} This matched set incorporates aetheric accelerators and deflection matrices in an elegant, wearable design.