Cobalt Golem (Variant)

Immutable Form. The golem can’t shape-shift.

Magic Resistance. The golem has Advantage on saving throws against spells and other magical effects.

Lightning Retention. If the golem's Conductive Body Reaction has been used in the last round, it gains the following trait. Each creature that hits the golem with a melee attack or ends its turn in a 5-foot Emanation originating from the golem takes 11 (2d10) Lightning damage and can’t take Reactions until it leaves the area.

Multiattack. The golem makes two attacks, using Bladed Arm and Lightning Bolt in any combination.

Bladed Arm. Melee Attack Roll: +14, reach 10 ft. Hit: 21 (2d12 + 8) Slashing damage plus 5 (1d10) Lightning damage, or 21 (2d12 + 8) Slashing damage plus 11 (2d10) Lightning damage if the golem's Conductive Body Reaction has been used in the last round.

Lightning Bolt. Ranged Attack Roll: +12, range 120 ft. Hit: 27 (5d10) Lightning damage, or 33 (6d10) Lightning damage if the golem's Conductive Body Reaction has been used in the last round.

Magnetic Pull (Recharge 6). Strength Saving Throw: DC 20, each creature made of metal, wearing metal armor, or wielding metal weapons in a 30-foot Emanation originating from the golem. Failure: The target is pulled to an unoccupied space within 5 feet of the golem and has the Prone condition.

Sword Whirlwind (Recharge 6). Dexterity Saving Throw: DC 20, each creature in a 10-foot Emanation originating from the golem. Failure: 21 (2d12 + 8) Slashing damage plus 5 (1d10) Lightning damage, or 21 (2d12 + 8) Slashing damage plus 11 (2d10) Lightning damage if the golem's Lightning Conductive Body has been used in the last round. Success: Half damage.

Conductive Body. Trigger: The golem takes Lightning damage. Response: The golem's attacks deal an extra 5 (1d10) Lightning damage until the end of its next turn.