Blight Revenant

Already dead. The Revenant cannot be killed by normal means. When the Revenant is slain it remains in place. On it's next turn roll a d6, on a roll of 6 the Revenant returns to life with full health and it can then take it's turn. This roll repeats each turn until the Revenant's essence is harvested with an action, or it is stopped by other means determined by the DM.

Hard to hit. The Revenant moves with supernatural speed. All attacks against it have disadvantage to hit, once it has been hit once, this effect stops until the start of the Revenant's next turn.

Psychotic mauler. If the Revenant has advantage on any of it's attacks, it may swap this advantage for an additional attack.

Ambusher. Revenants have advantage to hide.

The Revenant Makes two attacks:

Claw. Melee Attack Roll: +7, reach 5 ft. Hit: 10 (2d6 + 5) Slashing damage. If the target is already poisoned or restrained, it is subjected to the following effect. Constitution Saving Throw: DC 12. Failure: The target has the Paralyzed condition until the end of its next turn.

Tree step. The Revenant can use misty step at will or can move to within 5-feet of any tree within 120-feet of it.