Mox Amber (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Wizard Zombie Goblin each creature other than Massacre

each creature other than Massacre Girl gets -1/-1 until end of turn

Scars of Mirrodin

An Assassin's best armor is not being seen

Whenever a nontoken creature you control dies

Mox Amber (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Wizard Zombie Goblin each creature other than MassacreSet: The Brothers' War Retro Artifacts Type: Legendary Artifact Rarity: Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control. "A crystallized moment in time from the Mending Era, first discovered during the Ice Age. A temporal conundrum, even to the great scholar himself." *The Discoveries of Feldon*