Cadence McCoy, Reaper of Retribution

Retribution. When a creature successfully deals damage to Cadence, that creature will gain one stack of Retribution. Attacks or spells that multi-hit, spells that deal damage over multiple rounds, and other effects that do not cause damage instantaneously will provide one stack of Retribution for each source of damage dealt. Summoned creatures, or those under the control of another creature (such as skeletons from animate dead, or Draconic Spirits from Conjure Draconic Spirit) share stacks of Retribution with their summoner/controller. A creature may only hold 13 stacks of Retribution at a time. Stacks of Retribution do not expire.

Vengeful Strike. When Cadence makes an attack roll against a target that has stacks of Retribution, he gains a bonus to hit equal to that creature's stacks of Retribution.

Evened Odds. Cadence's hitpoint maximum scales with all enemies in combat with him. For every hostile creature engaged in combat with him, Cadence's hitpoint maximum increases by an amount equal to double that hostile creature's hitpoint maximum. This effect stacks with multiple hostile creatures. Increases to Cadence's hitpoint maximum caused by this ability expire after he completes a short or long rest.

Reaper's Armour. When an enemy with stacks of Retribution starts its turn, Cadence's Armor class increases by an amount equal to the amount of stacks of Retribution that creature currently possesses. This bonus to Armor Class expires when that creature ends its turn.

Dead Men Tell No Tales. A creature slain by Cadence's Divine Retribution ability has all of their memories stolen from them. Any items or objects pertaining to the slain creature's existence are modified in such a way that there is no evidence of that creature having existed. Any creature on the same plane of existence as Cadence when this occurs will have any memories surrounding that creature altered in such a way that they do not remember them existing. These memories can be restored to any creature that isn't the slain one through the use of the Greater Restoration spell. The slain creature's memories may only be restored by a Wish spell. When Wish is used in this manner, or if Cadence is slain, any alterations to reality and memories of creatures caused by this ability are reverted.

Evasion. If Cadence is subjected to an effect that allows him to make a Dexterity saving throw to take only half damage, Cadence instead takes no damage if he succeeds on the saving throw, and only half damage if he fails.

Martyr. When a creature misses Cadence with an attack roll, Cadence may choose to instead allow himself to be hit with the attack.

Legendary Resistance (3/Day). If Cadence fails a saving throw, he can choose to succeed instead.

Cadence starts battle with no legendary actions. Whenever a stack of Retribution is applied to a creature, Cadence gains one legendary action. The amount of legendary actions Cadence has resets to 0 at the start of his turn, any unspent legendary actions are wasted.

Cadence can choose from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The target of the legendary action (when applicable) must be a creature that damaged Cadence since his last turn. Once Cadence has targeted a creature once with one of his legendary actions, he must wait until the end of his next turn before he may target that creature again.

Six-Shooter (Costs 1 action). Ranged Weapon Attack: 1d20 to hit, range 40/120 ft., one target. Hit: (Target's Hit Dice Count) piercing damage per stack of Retribution on the target.

Spread-Shot (Costs 3 actions). Range 5 ft. cone centered on target in range. Each creature in the cone must make a DC (11 + Target's Retribution Count) Dexterity saving throw or take (Target's Hit Dice Count) piercing damage per stack of Retribution on the target. The range of this attack is increased by 5 feet for every stack of Retribution on the target.

 Pocket Sand (Costs 1 action). In a burst of dust, Cadence vanishes from his current position before reappearing within 30 feet. When this occurs, Cadence loses any Conditions currently affecting him.

If a creature with 13 stacks of Retribution ends its turn within 60 feet of Cadence, he may perform the option below against it instead of a legendary action.

Divine Retribution (Costs 1 action). Cadence points his finger at his target within 60 feet of him. The target must have 13 stacks of Retribution on it. All 13 stacks of Retribution on the target are then consumed. The target then takes 13 force damage for each hit dice it has. The target is disintegrated if this damage leaves it with 0 hit points. 

A disintegrated creature and everything it is wearing and carrying, except magic items, are reduced to a pile of fine gray dust. The creature can be restored to life only by means of a true resurrection or a wish spell.