Treasure Golem (5e Creature)
From D&D Wiki
Large swarm of Tiny constructs, unaligned
Skills Stealth +11
Antimagic Susceptibility. The golem is incapacitated while in the area of an antimagic field. If targeted by dispel magic, the golem must succeed on a Constitution saving throw against the caster's spell save DC or fall unconscious for 1 minute.
False Appearance. While the golem remains motionless, it is indistinguishable from a normal pile of treasure.
Immutable Form. The golem is immune to any spell or effect that would alter its form.
Magic Resistance. The golem has advantage on saving throws against spells and other magical effects.
Magic Weapons. The golem's weapon attacks are magical.
Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny coin or gem. The swarm can't regain hit points or gain temporary hit points.
Multiattack. The golem makes two slam attacks.
Slam. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 19 (2d12 + 6) bludgeoning damage, and the target is either pushed 10 feet away from the golem or knocked prone (golem's choice).
Gleamshard. Ranged Spell Attack: +12 to hit, range 60 ft., one target. Hit: 22 (3d10 + 7) force damage, and the target is pushed 10 feet away from the golem.
Hoard Blast (Recharge 5-6). The golem bursts into its component pieces, showering its assailants with treasure. All creatures within 15 feet of the golem make a DC 18 Dexterity saving throw. On a failed save, a creature takes 55 (10d10) bludgeoning damage and is knocked prone. On a successful save, a creature takes half as much damage and is not knocked prone. The golem discorporates and becomes untargetable until the start of its next turn, when it reforms in a space within 15 feet of its last space.
Weight of Greed (1/Day). All creatures within 15 feet of the golem make a DC 18 Wisdom saving throw. On a failed save, a creature takes 28 (8d6) psychic damage and is charmed by the golem for 1 minute. While charmed in this way, creatures are also dominated by the golem, as if affected by the spell dominate monster. On a successful save, a creature takes half as much damage and is not charmed.
Berserk Attacks. If the golem is hit by an attack that reduces it to half its maximum hit points or fewer, it makes two slam attacks against targets within its reach, determined randomly if there are multiple potential targets.
A treasure golem is an enormous heap of coins and other valuable items. Although the golem generally maintains a fixed shape, its body is more fluid than that of other golems, allowing it to compress itself, or to disguise itself as an ordinary pile of treasure.