Death Mark

The  is a new item in Risk of Rain 2.

Activation
Death Mark is activated by applying 4 unique debuffs onto a target.

These debuffs do not need to be applied by the same player and once an enemy is marked it will remain marked until it is killed or after 7 seconds have pasted.

Characters without the Death Mark still deal the bonus damage to marked enemies. [1] Needs more testing

[2] Needs more testing

* Note that Death Mark does not activate if you only have 4 stacks of the same debuff. The number of stacks is irrelevant. Just the number of different debuffs must be 4 or higher.