Theriados' Elemental Outburst

Elemental energies burst out from you to strike everyone around you.
Choose either cold, lightning, fire or acid. Every creature in a 15ft. circle centered on you must make a Constitution saving throw. On a failure, they take 1d12 points of the chosen damage type and are pushed away from you by 10ft. On a success, they take only half the damage and are not pushed away. You automatically succeed on this saving throw.

At Higher Levels. Using a Spell slot of 2nd or higher level increases the damage by 1d12 and extends the range of the spell by 5ft for each level above 1st.