Courier of chaos

Chaos adaptation: Courier of chaos can gain resistance to 3 damage types he has been hit whit, that will last 2 round and when a resistance has been lost it regains a chaos adaptation

Legendary Resistance (4/Day). If Courier of Chaos fails a saving throw, it can choose to succeed instead

Multi-attack. Courier of chaos does 2 Hellish slash or 2 Hellish hand Canon. In any combination

Hellish Slash. Melee Weapon attack: +9 to hit, reach 10ft, hit:16 (2d10+4) Slashing, and extra hit:9 (2d8) necrotic damage 

Ranger Sequoia. Ranged Weapon attack, +9 to hit reach 80ft, hit:12 (3d8) Piercing, and extra hit: 7 (2d6) Fire damage

Chaos Blast (recharge 5-6). Courier of chaos trows 2 grenade in 80ft range, that does blows up in 15ft radius, hit: 18 (3d10) Force,

Smokescreen. Courier of chaos can make a smokescreen, lasts until next turn of Courier of chaos

Courier of Chaos can take (4/ day) legendary actions, after end of an another creature's turn. Courier of Chaos regains 2 legendary every turn

Dead eye. Courier of chaos makes 2 attack using Ranger sequoia

Hellish dash slash. Courier of chaos dashes 20 ft then makes 1 attack using Hellish Slash