Base creature values. Events, world settings, difficulty and loot bonuses can change an encounter.

Irgix The Flimsy
Bosstiary · ArchfoeBoss rewardCreature resistance values; world limits may adjust them. Negative values indicate a weakness.
Invisibility
Base chance per roll, not a guaranteed reward. Bonuses, world multipliers and boss participation change the result. Charged items use their own quantities. Container contents also require the container to drop.
skull coin · 1 · 66.67%
white gem · 1 · 33.333%
groveheart rod · 1 · 16.67%
yellow gem · 1 · 16.67%
red gem · 1 · 16.67%
platinum coin · 1–8 · 10%
silver hand mirror · 1–2 · 1%
starstormsigil wand · 1 · 1%
cosmicsigil wand · 1 · 1%
death toll · 1 · 1%
diamond · 1 · 0.4%
nightguard boots · 1 · 0.23%
necklace of the deep · 1 · 0.1%