These cards come from all over Magic and have their own set symbol: Even rarer, these artifacts also come in a schematic art, still in the retro frame: Rarest of all, and one of the rarest promos ever printed in a Standard Legal set in Magics history, you can find serialized double-rainbow foil Schematic Arts in boosters as well
Karlach: Fury of Avernus and Astarion, the Decadent are some of the most useful cards to be found in Commander Legends: Battle for Baldurs Gate
You'll die as a state-based action when you do this unless you have a card like Phyrexian Unlife or Angel's Grace
For example, if you control one creature and an opponent controls four, then you play Knight of Lost Causes going up to two creatures, you are way behind this turn because, at some point in the past the turn, that opponent controlled three creatures more than you
Sandworm adding five hasty power plus a bonus round of landfall triggers is overwhelming
Depending on the amount of cards youre sorting, it might be smart to sort these in multiple combined piles