Nostalgia: The Heart of the Hobby Many collectors were first introduced to Pokmon during their childhood, and collecting cards is a powerful way to reconnect with those early memories
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
Its a strategy with a fair amount of support and can be pushed to a competitive level pretty easily if you look into it
Ajani will return to his right mind just before succumbing to his wounds, and get a sad goodbye with Elspeth, Jace will somehow be uncompleated, but will do down alongside Vraska as the two fight to their mutual death on Ravnica