WolfOTS

Nemesis

A monster that kills a hero may become that hero's nemesis: it takes a name, grows stronger with every victim and keeps hunting in its zone. Slay it for great rewards - and if it once killed you, avenge yourself.

Living nemeses

No nemesis hunts the lands right now.

Hall of the fallen

No nemesis has been slain yet.

How it works

Birth
When a monster of a hunting zone kills a character of level 30 or more, it may become that character's nemesis (one per zone, 25 at most in the world). Bosses, raid, march and event monsters never do.
Rank
Every new victim heals it and raises its rank, up to 5: more health and damage with every rank.
Life
A nemesis that disappears comes back in its zone after a while. One that finds no victim for 7 days fades away.
Slaying
Everybody with at least a tenth of the damage gets more experience; the corpse holds better loot and, from rank 3, an upgrade stone. The top fighter takes its trophy. Its own victims are avenged: more experience, the title "the Avenger" and an achievement.

In the game: the Nemesis window in the Wolf menu or !nemesis.