Mox Amber [Dominaria Prerelease Promos] Devil if Mana Vault is tapped

if Mana Vault is tapped

{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn

{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}

Friends teach what you want to know

Each player who doesn't win the subgame loses half their life

Mox Amber [Dominaria Prerelease Promos] Devil if Mana Vault is tappedSet: Dominaria Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control. A moment in time made tangible, it has the power to realize epic visions.