Blessing of the Purple Dragon

You have earned the favor of an Elder Purple Dragon, and its arcane might seeps through your very being.

You may use your breath weapon up to as many times as your proficiency modifier or your spell casting ability modifier, whichever is higher. Uses of your breath weapon reset after a long rest. For each d6 rolled on a breath weapon attack, you may additionally roll 1d4 of the same element and add it to your damage.

When attacking with your breath weapon, you may choose either your selected ancestry's breath weapon or the Purple Dragon's Breath. Purple Dragon's Breath is a 15 ft. cone of psychic damage, and the saving throw for this attack is Wis.