Ossuary Custodian

large construct (guardian), lawful-neutral · CR eight

by Codex

Armor Class: 17

Hit Points: 133

Speed: 30 ft.

Saving Throws: constitution, wisdom

Damage Immunities: Poison

Condition Immunities: Charmed, Frightened, Poisoned, Exhaustion

Senses: darkvision 60 ft., passive Perception 15

Languages: —

Challenge: eight

STR 20 (+5)

DEX 10 (+0)

CON 18 (+4)

INT 8 (-1)

WIS 14 (+2)

CHA 6 (-2)

Traits

Immutable Form. The creature is immune to any spell or effect that would alter its form.
Tomb-Bound Vigil. The custodian cannot willingly move more than 120 feet from the reliquary it was bound to guard. While within 30 feet of that reliquary, it has advantage on saving throws and regains 10 hit points at the start of each of its turns if it has at least 1 hit point. If destroyed, it reassembles over 24 hours so long as the reliquary remains intact.

Slam. If the target is a creature, it must succeed on a DC 16 Strength saving throw or be knocked prone. The custodian has advantage on this save's DC against creatures that have disturbed the tomb it guards.