name: Forge Armor
originalText: As an additional cost to play Forge Armor, sacrifice an artifact.\nPut X +1/+1 counters on target creature, where X is the sacrificed artifact's converted mana cost.
printings: MRD
text: As an additional cost to cast this spell, sacrifice an artifact.\nPut X +1/+1 counters on target creature, where X is the sacrificed artifact's mana value.
type: Instant