How Random Mob Effects Works
A Permanent Twist on Hostile Mobs
Random Mob Effects Mod changes how hostile mobs behave by giving each one a random potion effect the moment it joins the world. This applies to hostile mobs as a whole, so the danger you face depends on luck rather than a fixed pattern.
The key detail is duration: the effects last an incredibly long time, effectively permanent for the life of that mob. This turns ordinary encounters into unpredictable fights, since you never know what you are walking into until the mob is already there.
The mod is lightweight and single-purpose. It does not add new items or mobs; it only layers randomness onto existing threats. The result is a harder, more chaotic game that rewards quick thinking over routine combat. If you want familiar enemies to stay dangerous, this is the mechanic at work.