If there's more than one card face up on a stack (which could happen if you've drawn multiple copies of a card), all those cards are in play
If holos and Gold Stars were printed on the same sheet, I see no way to ensure the Gold Stars all land in boxes with 10 cards from that sheet and only 2 Pokmon-ex
Spacecraft look strong, and I expect them to play well in Limited
A recent example of this is when a 2004 Pokmon ex Team Rocket Returns Rocket's Entei ex Holo, graded PSA 10, skyrocketed from just over $3,000 to $14,000 in less than two months
A lot more ally-colour synergy cards show up in this set
In a similar sense, I think that if we are working with self milling cards or just a high ratio of spell cards in general, then Psychic Spiral can itself be a powerful win condition to reach a similar goal as the previous examples