MewgenicsWiki

Item

Jar of Radiation

Quest

Jar of Radiation is a quest trinket in the Radioactive item set. It must be filled with the Throbbing King's blood as part of the Nuke quest chain. While carried, it deals 1 damage to every combatant on the field at the end of the wielder's turn, and at the end of each battle permanently shifts the bearer's stats: +1 to a random stat, -1 to another. A volatile item that continually reshapes a cat's stat spread.

The 1 damage per turn to all combatants is minor in isolation but accumulates over long battles, chipping away at both sides equally. The real danger is the post-battle stat shuffle: each fight guarantees one stat goes up and one goes down on the carrier, meaning a long enough run with this trinket will significantly randomize that cat's stats in unpredictable directions. Strategic carriers minimize this risk by assigning it to cats whose role does not depend on any specific stat.

Equip the Jar of Radiation on a cat with broadly useful stats so that any resulting shift is less damaging. In the short term, the turmoil is worth accepting to advance the Nuke quest. Resist the temptation to exploit the per-turn damage as a combat tool — at 1 damage it is negligible on most enemies. Focus on getting the bearer to the Throbbing King encounter as quickly as possible to fill the jar and end the stat-scrambling phase.

Details

CategoryTrinket
Special EffectPassives: StatusEachTurnEnd, StatusOnBattleEnd
RarityQuest

Quick Facts

Type
Item
Confidence
High
Verified
Mar 17, 2026