Homebrew
Frost Nova
1-level Evocation
Casting Time: 1 action
Range/Area: Self (10ft Radius)
Components: Verbal, Somatic
Duration: Instantaneous
You release a burst of icy energy in all directions. Each creature of your choice within 10 feet must make a Constitution saving throw. On a failed save, a creature takes 2d6 cold damage and is Chilled until the end of its next turn. On a success, a creature takes half damage and is not Chilled.
At higher levels: When you cast this spell using a spell slot of 2nd level or higher, the cold damage increases by 1d6 for each slot level above 1st.
Available for: Mage