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

an acid blob
Creature resistance values; world limits may adjust them. Negative values indicate a weakness.
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.
glob of acid slime · 1 · 18.52%