Angelic Commoner

Blessed Combat. The Angel can Choose to Use Charisma For Melee Attacks (Included in its Statblock).

Celestial Body. The Angel is Immune to Disease.

Divine Shield. When the Angel is Reduced to 0 Hitpoints they instantly gain the Effects of the Sanctuary Spell forcas Long as they Remain at 0 Hitpoints. Additionally they are Immune to Spells that would Automatically kill them and are instead Reduced to 0 Hitpoints.

Immortal Soul. When the Angel Dies they're spirit is Transported back to the Upper Planes where they will Reconstitute their body over the course of 10 years. Only a True Resurrection Spell can Bring them back Earlier.

Club. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4+1) bludgeoning damage.

Shapechange. The Angel has a Single Humanoid Form that they can Change into. They can change into this Form as tho they were Using the  Polymorph however their Statistics remain the Same.