Ultra-rare

• Ultra-rares are exceedingly rare items that have an exceptionally low chance of dropping.
• There is no way to make ultra-rares appear more often. In the words of Ryme: "ultrarares aren't affected by anything whatsoever". Specifically, Combat chance modifiers have no effect.
• There are 7 known ultra-rares:

• Abaddon charm from the Fiendish Pit
• Boomstick from the Guild for Imaginative Metachronism
• Ebon Eye of the Deep from the Porcelain Bay
• Filthy sock puppet from Investigate the trash bin out back
• SQUID disc: The Best Memory from the Cube Theater
• Ultimate Aviator Goggles from Flying above Twilight
• Shimmering chaos from The Farthest Reaches of Insanity