Ancient Gear Beast [SR03-EN007] Common Legendary Duelists You can only use each

You can only use each of the following effects of "World Legacy - "World Chalice"" once per turn

You can only activate 1 "Bond Between Teacher and Student" per turn

" must be on the field to activate and to resolve this effect

You can only use this effect of "Stack Reviver" once per Duel

or that is banished

Ancient Gear Beast [SR03-EN007] Common Legendary Duelists You can only use eachSet: Structure Deck: Machine Reactor Card type: Effect Monster Rarity: Common Attack: 2000 Defense: 2000 Cannot be Special Summoned. If this card attacks, your opponent cannot activate any Spell Trap Cards until the end of the Damage Step. Negate the effects of an opponent's monster destroyed by battle with this card (including in the Graveyard).