One out of three times give dungeon bosses a red, blue, yellow, grey, black or purple glow:
- red means: the dungeon boss deals 50% more damage but also takes 50% more damage
- yellow means: the dungeon boss moves and attacks 50% faster, but also takes 50% more damage
- purple means: the dungeon boss can become invisible for short periods of time (you can still hit it), but also takes 50% more damage
- blue means: the dungeon boss can knock you back and slow you, but also takes 50% more damage
- grey means: the dungeon boss is duplicated and you’ll fight two of it at once, but both take double damage
- black (rarest spawn) means: the dungeon boss has all bonusses from the other colors and takes no extra damage
Increase the dungeon reward according to the difficulty of the boss fight.
This has a relatively low development impact and makes boss fights much more interesting. This could also be applied to Elites.
Note: this shouldn’t apply to campaign bosses while doing the campaign, perhaps it’s best to apply it to dungeons in World Tier IV (and up).