Cathedral Grave Warden

Two-Weapon Fighting: Cathedral Grave Warden can add it's ability modifier to its second Melee Weapon Attack. 

Undead Fortitude: If Cathedral Grave Warden drops to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless it was a result of radiant damage or a critical hit. On a success it drops to 1 hit points instead. 

Rejuvenation: If it dies, Cathedral Grave Warden returns to life with full hit points 1d4 days later upon the consecrated ground it was created. Only a wish spell can prevent this trait from functioning. 

Multi-Attack: Cathedral Grave Warden makes two Melee Weapon Attacks (4 total with two-weapon fighting)

Warden Blade: Melee Weapon Attack: + 9 to hit, reach 5ft., one target. Hit: 10 (1d8 + 5) [slashing] damage. 

Dancing Blades: 3x Melee Weapon Attacks: + 9 to hit, reach 5ft radius area of effect, Hit: 10 (1d8 + 5) [slashing] damage for each hit. (6 possible hits with Two-Weapon Fighting) Attacks against Cathedral Grave Warden have advantage until it's next turn.