Magical Breath Weapon

Your Breath Weapon springs from your Magical Abilities. You Gain the following benefits: 

• You can expend a spell slot to gain additional uses of your Breath Weapon feature. When you do, the damage increases by 2d6 for each level of the spell slot higher than 1st and the size increases by 10ft(Cone) or 20ft(Line) for each level of the spell slot higher than 1st.
• You can use your Spellcasting modifier instead of Constitution for the save DC.
• Your Breath Weapon and Spells you cast ignore resistance to the damage of your Draconic Ancestry.