Excalibur, Sword of Eden 169 (Universes Beyond: Assassin's Creed)

This spell costs {X} less to cast, where X is the total mana value of historic permanents you control. (Artifacts, legendaries, and Sagas are historic.) Equipped creature gets +10/+0 and has vigilance. Equip legendary creature {2}

NM - $23.31
LP - $18.64
MP - $13.99
HP - $9.32
DMG - $4.67