Your opponents can react if they so wish, and once the stack is empty and all players pass priority, the end step finishes
A small group of unawarded examples have also surfaced recently with an estimated 20 additional being now alongside the ones awarded in the late nineties
Personaly, I think it was a stroke of genius to encorperate Syncros into the God Cards, without actualy remaking a card that already exsists in the TCG, CCG, or whatever other acronym you wish to call Yu Gi Oh
Booster boxes are not available at MSRP in practice market price has held at $250-300 so pack-based completion is inefficient versus the math on paper
You're still better off buying your rares and mythic rares as singles, if needed
The difference comes down to shipment timing, local demand, and how quickly team members move product from the backroom to the shelf