A Dungeoneering Wildcard is a promotional prize on Treasure Hunter, originally available from 3 September to 7 September 2015. Players were given a free card upon using Treasure Hunter: You have been given a Dungeoneering Wildcard! It has been placed in your inventory.
Consuming the card in Dungeoneering provides 50% extra experience and dungeoneering tokens for the current floor. They stack in the inventory, but only one can be used per floor. They can't be used on the same floor as solo gorajo cards. They also cannot be used when a Bonus XP Weekend is active.
They were available on Treasure Hunter again on 8 December 2015 as a part of the Advent Calendar promotion.
All existing Wildcards were removed from the game on 7 March 2016.
Vic's Store stocked Dungeoneering Wildcards between 4 and 18 July 2016.
Dungeoneering Wildcards are also a possible prize from the Motherlode Maw, and occasionally show up in the Travelling Merchant's Shop at the Deep Sea Fishing hub.