Grand Slam

Equip creature with Bomb 2 or higher.
Whenever equipped creature deals combat damage to a player, planeswalker or battle, you may sacrifice this artifact. If you do, choose one:
• Destroy target permanent.
• Deal 6 damage to the player, planeswalker, or battle that the equipped creature is attacking.
Equip {4}
At 22,000 lb, the grand slam was the heaviest bomb of the war.