Champion Mob
Champion Mobs are regular Minecraft mobs with additional abilities added by Thaumcraft. A champion mob can be identified by their name tag (e.g. "Undying Skeleton") and because they emit specific particles.
Spawning
Every time a mob spawns[1] there is a chance that it will receive the tc.mobmod tag and become a champion. The base chance is 1%, and can be affected by the following factors:
- The chance is decreased by 2% if the world difficulty is easy;
- The chance is increased by 2% if the world difficulty is hard;
- The chance is increased by 3% in the Outer Lands dimension;
- The chance is increased by 2% in biomes which contains the tags SPOOKY, NETHER, or END;
- The chance is increased by 10% in "dangerous locations"[2] (some specific rooms in the Outer Lands dungeons);
- The chance is increased by 1% if the entity is a witch, a wisp, a cultist, or a pech;
- The chance is increased by 2% if the entity is a taintacle or a watcher;
- The chance is increased by 3% if the entity is a shambling husk.
For example, in the undergarden biome in the nether (whose tags are JUNGLE, SPOOKY, NETHER) and in hard difficulty, 5% of the spawned skeletons will be champions.
Of the vanilla mobs, only zombies, spiders, blazes, endermen, skeletons, and witches can be champion mobs[3]; additionally, the Thaumcraft mobs eldritch crab, taintacle, wisp, shambling husk, cultist, watcher, and pech can also be champions, and Thaumcraft bosses will always be champions.
Types
There are 13 possible modifications[4]: bold, spined, armored, mighty, grim, warded, warp, undying, fiery, sickly, venomous, vampiric, and infested.