Experimental Treatment

Experimental Treatment is a sidequest face armor from the Experimental item set that replaces the team's passive ability level-up options with disorders instead. Actively building disorders through level-ups creates an unusual risk-reward loop. Complete the sidequest to earn the Disorder Decoder, which converts all accumulated disorders into spell cost reduction.

Every passive level-up option is replaced with a disorder, meaning passive development is entirely sacrificed in favor of disorder accumulation. This is a high-cost trade during the sidequest phase, as passives are often the most impactful level-up choices. However, the disorders accumulated here are exactly what the Disorder Decoder will convert into mana reduction, making the setup phase a deliberate investment in the endgame payoff.

Complete this sidequest as early as possible to minimize the number of passive level-ups lost. Equip Experimental Treatment on a cat who either already has strong passives from class progression or whose class benefits most from the Disorder Decoder payoff. Once the Decoder is earned, swap Experimental Treatment off and equip the Decoder — from that point, every disorder the cat has becomes permanent mana reduction for the rest of the run.