Sunlight Sensitivity. While in sunlight, the Acolyte of Death has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Spider Climb. The Acolyte of Death can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Multiattack. The Acolyte of Death makes two attacks.

Scythe of Styx.Melee Weapon Attack: +6 to hit, reach 5 ft. Hit: 8 (2d4 + 3) slashing damage plus 7 (2d6) necrotic damage. The Acolyte of Death regains hit points equal to the amount of necrotic damage taken. The target makes a DC 14 CON save or has its hit point maximum reduced by an amount equal to the necrotic damage taken. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.