To use the Set From Deck effect, you need to Chain it directly to a Normal Trap card activation (only flipping a card on the field is considered Normal Trap Card activation), so it can easily be interrupted by an opponent's Quick Effect
You can pay at any time you could cast a sorcery to put your companion into your hand from outside the game
The Destined Rivals set, released on May 30, 2025, as the tenth and final main expansion of the Scarlet & Violet series, is a market darling with 244 cards (182 main, 62 secret rares), pitting Team Rocket against Trainers like Cynthia and Ethan
Chart shows the price of Misty's Psyduck #54 at the end of each month going back as long as we have tracked the item.
Since it's a Quick-Play Spell, if you use it during your opponent's turn, you'll be able to put out monsters other than "Evil Twins" from the EX Deck on your next turn, so I think it's one of the options