Dark Lords Avatar

At 16th level, you can transform into a terrifying avatar of darkness, embodying the power and dread of the Dark Lord himself. As an action, you can assume the form of the Dark Lord's Avatar for 1 minute. During this time, you gain the following benefits:

• You have resistance to all damage.
• You are immune to being charmed, frightened, paralyzed, or poisoned.
• Your attacks are considered magical for the purpose of overcoming resistance and immunity to non-magical attacks and damage.
• You can use your action to unleash a wave of dark energy in a 30-foot radius around you. Each creature of your choice must make a Constitution saving throw (DC 8 + your proficiency bonus + your Charisma modifier) or take 5d10 necrotic damage and be blinded for 1 minute. A blinded creature can repeat the saving throw at the end of each of its turns, ending the blindness on a success. Once you use this ability, you can't use it again until you finish a long rest.
• You gain a flying speed equal to your walking speed.