Hollow One

As a Hollow one, the void left behind by your departed soul is filled with the strange magic of death, becoming a hollow one bestows certain gifts.

Ageless - you don't age and effects that cause aging don't work

Cling to Life - when you make a death saving throw and roll 16+ or higher, you regain 1 hitpoint

Reverance - You retain your creature type, yet you register as undead to spells and effects that detect the presence of undead creature types.

Unsettling Presence - as an action, you can unsettle a creature you can see within 15ft of you. The target has disadvantage on the next saving throw it makes within the next minute. Constructs, undead and creatures that can't be frightened are immune to this feature. Once you use this feature, you can't use it again until you finish a long rest.