Otherwise you could possibly be rendering your Instant Fusion useless, or you're passing up a great opportunity to plus
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
Spacecraft look strong, and I expect them to play well in Limited
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
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
Invasion of New Phyrexia A-Tier: While I'm not expecting Invasion of New Phyrexia to show up outside of Standard, it looks to be one of the best battles for Standard