Corrupted Deva

Innate Spellcasting. The deva's spellcasting ability is Charisma (spell save DC 17). The deva can innately cast the following spells, requiring only verbal components:

At will: detect evil and good

1/day each: commune, raise dead

Magic Resistance. The deva has advantage on saving throws against spells and other magical effects.

Multiattack. The deva makes two melee attacks.

Angelic Blade:Melee Weapon Attack: +10 to hit, reach 5 ft., one target.

Weapon (shortsword), very rare

This pure silver blade, seems to shimmer and glisten with pure energy. It has one phrase written into the crossguard. "Vigilance is your duty!"Y

Youhave a +2 bonus to attack and damage rolls made with this magic weapon. 

Allows once a day to smite evil with a powerful hit ( add 4d8 of radiant damage) to a single hit. Must be stated before attack roll is done.

As an action, the wearer can speak into the blade and grow 2 glorious white wings with a fly speed of 60 ft for 1 hour! The weapon will recharge at dawn every morning.

Proficiency with a shortsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Angelic Wail (3/Day). The deva lets out a cry of spiritual agony, all creatures who are of non evil alignment within 60ft. Must make a CON save DC 17 or take (15d8) Psychic damage and become frightened for one minute. A creature that makes its save takes half damage and it's not frightened. At the end of each of the effected creatures turn they may try to save VS the DC+1 for each cumulated fail as they are plunged into a spiritual existential crisis.

Change Shape. The deva magically polymorphs into a humanoid or beast that has a challenge rating equal to or less than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the deva's choice).

In a new form, the deva retains its game statistics and ability to speak, but its AC, movement modes, Strength, Dexterity, and special senses are replaced by those of the new form, and it gains any statistics and capabilities (except class features, legendary actions, and lair actions) that the new form has but that it lacks.