Emrakul is the ultimate game over card
It is buying the wrong version, wrong condition, or wrong product
Getting to immediately discard two and draw two gives you huge value, sculpting your hand, setting up delirium and the like
(You may cast it from your graveyard for its escape cost this turn.) Whenever Desdemona attacks, target creature card in your graveyard that's an artifact or that has mana value 3 or less gains escape until end of turn
Restricted Areas : During the Upkeep Phase, if the investigator is in a library or within a street with an exploration marker, either pays acquired monsters with a total of 5 or more hit points, or pays 1 acquired portal to rummage through the regular item pile for the first one to come up
Released in Phantom Forces (2014), it became infamous for being so overpowered that it was banned from competitive play a rare fate in the TCG world