Druids of the Corrupted Moon are druids who have been bent and broken by unholy means Corrupting the Affinity they once had with nature And tipping the scales to favor death and decay rather than to preserve life and keep true balance.

Corrupted Wild Shape

Corrupted wild shape When you choose this circle at 2nd level, you gain the ability to use Wild Shape on your turn as a bonus action, rather than as an action.

Additionally, while you are transformed by Wild Shape, When you Hit with a melee attack you can use a bonus action to expend one spell slot to deal 1d8 Necrotic damage per level of the spell slot expended

Corrupted Circle Forms

The rites of your circle grant you the ability to transform into more dangerous animal forms. Starting at 2nd level, you can use your Wild Shape to transform into undead beast with a challenge rating as high as 1 (you ignore the Max. CR column of the Beast Shapes table, but must abide by the other limitations there).

Starting at 6th level, you can transform into a undead beast with a challenge rating as high as your druid level divided by 3, rounded down.

Corrupted Nature

Gain access to Necromancy Magic May not take Animate Dead, Summon Undead Spirit, Raise Dead or Create Undead

Necrotic Strike

Starting at 6th level, your attacks in beast form count as Necrotic for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.

Corrupted Circle Forms

The rites of your circle grant you the ability to transform into more dangerous undead animal forms. Starting at 6th level, you can transform into a undead beast with a challenge rating as high as your druid level divided by 3, rounded down.

Advanced Corrupted Wild Shape

You can expend two uses of Corrupted Wild Shape at the same time to take on the shape of a undead beast and additionally summon 2 undead beasts of 1/2 rating or one 2 challenge rating. Beasts summoned this way will have a duration of 1 hour after the time is up the corpse decays leaving no trace behind.

Spread Corruption

Starting at 14th level, you can use magic to corrupt undead beast Bringing them under your control, even those created by others. As an action, you can choose one undead beast that you can see within 60 feet of you. That creature must make a Charisma saving throw against your druid spell save DC. If it succeeds, you can’t use this feature on it again. If it fails, it becomes friendly to you and obeys your commands until you use this feature again.