star pack battle royal booster box Konami YGO Pack- CDU : Toys & Games including notable cards like Cardcar D Yugioh Star Pack Battle Royal

C Common Wind-Up Factory X SPELL Continuous Once per turn, if an effect of a "Wind-Up" monster is activated (except during the Damage Step): You can add 1 Level 4 or lower "Wind-Up" monster from your Deck to your hand

But because grading companies like PSA are still going through a backlog of cards, Smith thinks there will be an increase in supply

Theres Academy Manufactor, Tireless Tracker, and Curse of Opulence, all between $2 to $3 each, but thats about it

The effect in the second half has a restriction of "once per turn", so even if you have multiple GYs, you can only Special Summon one, but stacking multiple copies makes it easier to use the effect in the first half, so I think stacking three is fine