Balefire Dragon [Commander Masters] 101 Activated abilities of sources with

Activated abilities of sources with the chosen name can't be activated unless they're mana abilities

You can only use this effect of "The Ultimate Creature of Destruction" once per turn

or—if they get desperate enough—the truth

Set: Limited Edition Beta Type: Artifact Rarity: Rare Cost: {5} {5}

Balefire Dragon [Commander Masters] 101 Activated abilities of sources withSet: Commander Masters Type: Creature Dragon Rarity: Mythic Cost: {5}{R}{R} Flying Whenever Balefire Dragon deals combat damage to a player, it deals that much damage to each creature that player controls. If it comes for you, die boldly or die swiftly for die you will.