Anastasio, the Atoner

Fanatical Pursuit. Anastasio cannot be charmed, and he has advantage on saving throws against effects that would force him to move against his will.

Gospel Executioner. If no hostile creature is within 5 feet of Anastasio at the start of his turn, he enters Execution Stance until the end of that turn. While in this stance:

• His movement speed increases by 10 feet.
• His Gospel Shot attacks deal an extra 1d8 necrotic damage.
• He has advantage on ranged attack rolls.

Atonement Beyond Death. The first time Anastasio is reduced to 0 hit points, he does not die. Instead:

• He remains standing until the end of the current turn.
• At the start of the next round, he transforms into Phase Two: Anastasio Reborn.
• He regains 90 hit points.
• His movement speed increases by 10 feet.
• Gains immunity to the stunned condition.
• Legendary Actions increase to 3 per round.
• Summon an Saltheap Cannon if he in his lair

This transformation can occur only once.

Zeal of the Dying (Phase Two). Whenever an allied creature enters the battlefield under Anastasio's command, Anastasio gains:

• 10 temporary hit points
• +2 damage on all attacks until the end of his next turn.
• At the start of each of Anastasio's turns, he loses 5 hit points.

Unstoppable Salvation (Phase Two). While no hostile creature is within 5 feet of Anastasio, he gains resistance to: Bludgeoning, Piercing, and Slashing damage from nonmagical attacks.

Multiattack. Anastasio makes two(three in phase two) Bone Rapier attacks.

Bone Rapier. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 10 (1d8 + 6) piercing damage.
If Anastasio hits the same creature with two Bone Rapier attacks during the same turn, that creature must succeed on a DC 16 Constitution saving throw or take 14 (4d6) necrotic damage.

Gospel Shot. Ranged Weapon Attack: +8 to hit, range 80/320 ft., one target. Hit: 13 (2d8 + 4) piercing damage plus 4 (1d8) necrotic damage.
Each creature within 5 feet of the target (excluding Anastasio) takes 7 (2d6) necrotic damage.

Gospel Spray (Recharge 5–6). Anastasio unleashes a barrage of sanctified gunfire.
Choose up to five creatures Anastasio can see within 60 feet. Each target must make a DC 16 Dexterity saving throw, or taking 14 (4d6) piercing damage plus 7 (2d6) necrotic damage on a failed save, or half as much damage on a successful one.

Heart-Piercing Salvation(Phase Two) (Recharge 5–6).
Anastasio moves up to 30 feet in a straight line without provoking opportunity attacks.
Each creature whose space he moves through or adjacent to during this movement must make a DC 16 Dexterity saving throw, taking 27 (6d8) piercing damage and the creature falls prone on a failed save, or half as much damage  and does not fall prone on a successful one.

Anastasio can take 2 legendary actions, choosing 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.

Advance. Anastasio moves up to half his speed.
Gospel Shot. Anastasio makes one Gospel Shot attack.
Dash Through Sin(Phase Two). Anastasio moves up to 20 feet without provoking opportunity attacks.
Bone Judgment(Phase Two) (2 Actions). Anastasio makes one Bone Rapier attack. On a hit, the target must succeed on a DC 16 Wisdom saving throw or become frightened of Anastasio until the end of its next turn.