This is likely because of its pretty unique effect thats nicely suited to multiplayer formats by making things worse for your opponents while better for you
Although far less proliferated compared to Affinity and Equipment, Imprint has stuck around across a handful of sets (mostly related to returns to Mirrodin ), and has even branched into non-artifact cards more recently
To represent the quantity, serialized cards are numbered collectibles
Are they better than the legendary creatures that synergize with the rest of the deck
This helps out no less than six creature types, specifically Bird, Cat, Dog, Goat, Ox, and Snake
Its definitely costly, but I like having a Rishkar's Expertise with a little flexibility