The Extinction Bank, as it appears in a players inventory
The Extinction Bank is an exceedingly rare monster drop. The creatures in the frontier known to drop it are the Esteemed Gumbo , the Whisperer, the Coral Giant, and the Primeval Genie. It sells for 5,000,000 gold and its description reads "The bank's phone rang in a shriek. The teller shoved it against their ear. The voice came in a frenzy "That THING is right outside!" The line disconnected. With a yell and a hop, the teller leaped into the air."