Interestingly, though, Impostor Syndrome as a card is more than just a meme
Having said that, condition matters a lot, and cards that score highly according to professional graders like PSA, BGS, CGC or Beckett tend to grow in value the most
Abilities with Conditions Some abilities only activate under specific conditions
(It can't attack its controller or their permanents.) : Add
Other prominent mechanics that incorporate (or freely enable) sacrifice include: Food, Clues, Treasures, Sagas, Unearth, Encore, Evoke, any other temporary tokens such as Faerie Artisans or Hostility, cards with Upkeep, Quests, Exploit, Casualty and now Bargain
Each deck also includes new cards like Lugia ex, Ho-Oh ex, Suicune ex, Sun Seed, Scorching Charcoal, Drops in the Ocean, and a Mr