Dragon Lung

After interacting with corrupted magic your body has mutated in a unique way. Once a day you can use an action to exhale destructive energy.

When you use this breath weapon creatures in a 5ft. by 30ft. line (starting from you) must make a dexterity save with a DC equal to 8 + your proficiency bonus + your Constitution modifier. A creature takes 2d6 radiant damage on a failed save or half as much on a success. Furthermore you take half as much damage yourself.

After using this ability you must make a Constitution save with a DC equal to the damage taken or 10 (which ever is lower). On a failed save you are unable to speak for 1 minute, any attempt to speak or use the verbal component of spells causes you to cough and splutter and the spell to fail (without consuming the spell slot). You may repeat the save at the end of each of your turns, ending the effect on a success.

The damage increases to 3d6 at 6th level, 4d6 at 11th level and 5d6 at 16th level.

Once you use this ability you cannot use it again until the next dawn.