![Forge Armor [Mirrodin]](http://theboosterbox.com/cdn/shop/products/3e5e7ab2-c11c-5f35-880c-eabf9cd6013f.jpg?v=1702032927&width=672)
![Forge Armor [Mirrodin]](http://theboosterbox.com/cdn/shop/products/3e5e7ab2-c11c-5f35-880c-eabf9cd6013f_1024x.jpg?v=1702032927)
Description
| Set: | Mirrodin |
| Type: | Instant |
| Rarity: | Uncommon |
| Cost: | {4}{R} |
As an additional cost to cast this spell, sacrifice an artifact.
Put X +1/+1 counters on target creature, where X is the sacrificed artifact's mana value.
Put X +1/+1 counters on target creature, where X is the sacrificed artifact's mana value.