Unstable Payload is a unique Cobalt Jewel. Note that Unstable Payload will not Rearm Traps for an additional trigger if a trap is triggered at the end of the trap duration using the Sunblast. This item can be acquired through the following upgrade paths or vendor recipes:
(8-12)% Chance for Traps to Trigger an additional time
Saboteurs, like chefs, have their own secret recipes.
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Price in Leagues