Blightbelly Rat Drown in Ichor Grim Affliction Gulping Scraptrap Scheming Aspirant Spread the Sickness Vat Emergence Vraska, Betrayal's Sting Whisper of the Dross Yawgmoth, Thran Physician
Theyve even inspired a traveling museum exhibit in Japan, where visitors can learn about the real-life inspirations of Fossil Pokmon design
Essentially a hastened Rummaging Goblin, you get access to madness costs on your spells with very little effort, with the main upside being that you will have a dedicated way to fill your graveyard with cards that want to be there, right from the command zone
Two of these mechanics basically re-flavour things youd do in a normal game and then give them a fancy name, rewarding you for indulging in them
These cards, while often bought in the gambling-lite hope of pulling a rare card, actually exist to be the playing cards for a massively popular game