Ancient Gear Golem + 2 Ancient Gear monsters
Must be Fusion Summoned. If this card attacks a Defense Position monster, inflict piercing battle damage. If this card attacks, your opponent cannot activate any Spell Trap Cards until the end of the Damage Step. If this card is destroyed: You can target 1 Ancient Gear Golem in your GY; Special Summon it, ignoring the Summoning conditions.