And Ill note here Ive never actually taken the time to consider my entire collection, having flipped thru the binders quickly to appreciate this answer unlike before, and the real answer is this is impossible
Both allied and enemy colours can make for strong decks
COLLECT SPECIAL TREATMENT CARDSEvery deck also comes with a 2-card Collector Booster Sample Pack containing 2 alt-border cards from the Modern Horizons 3 set, including 1 Rare or Mythic Rare and at least 1 Traditional Foil card
Again, limited by time, you spend Wonder Hourglasses to recover wonder stamina for essentially a game of lucky pick: you select a group of five cards on offer, they're shuffled up in a whirl, follow-the-cup magic trick style, and you pick one in the hope it was that fancy full-art Pidgeot or one missing, mid-stage evolution for that deck you're building
We don't really need to go much into why the card is good, 3 cards for one mana is a bit of theme at the top end of this list
For instance, before the release of Silver Tempest in November, Incandescent Arcana came out as a subset in September and featured many of the cards in Silver Tempest