Guardian Angel

The angel can move through other creatures as if they were difficult terrain.

Melee Weapon Attack: your spell attack modifier to hit, range 10 ft., one target you can see. Hit: 1d6 + PB radiant or necrotic damage and the angel regains half as many hit points.

The angel teleports to an empty space adjacent to an allied creature within 60 feet of it.

When a creature other than the angel is hit by an attack while within 30 feet of the angel, the angel can teleport into the creature's space, taking the damage instead of the creature. To do so, the angel must be able to see both the creature and the attacker.