2 "Ancient Gear" monsters
Unaffected by other cards' effects. During your Main Phase: You can inflict 1000 damage to your opponent. You can only use this effect of "Ancient Gear Howitzer" once per turn. If this card is destroyed by battle and sent to the Graveyard: You can Special Summon 1 "Ancient Gear" monster from your Deck, ignoring its Summoning conditions.
3 "Ancient Gear" monsters
If this card attacks, your opponent cannot activate Spell/Trap Cards until the end of the Damage Step. If this card was Fusion Summoned using 2 or more "Ancient Gear Golem" and/or "Ancient Gear Golem - Ultimate Pound" as material, it can attack up to that many times during each Battle Phase. If this face-up Fusion Summoned card in its owner's control leaves the field because of an opponent's card effect: You can Special Summon 1 "Ultimate Ancient Gear Golem" from your Extra Deck, ignoring its Summoning conditions.
4 "Ancient Gear" monsters
Must be Fusion Summoned and cannot be Special Summoned by other ways. Unaffected by Spell/Trap effects. Your opponent's monsters cannot activate their effects during the Battle Phase. This card can attack all monsters your opponent controls, once each. If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent.
"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 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 its Summoning conditions.