Homebrew
Frostbite
0-level (Cantrip) Necromancy
Casting Time: 1 action
Range/Area: Touch
Components: Verbal, Somatic
Duration: Instantaneous
Attack/Save: Melee
Damage/Effect: Cold
You chill a creature with necrotic frost. Make a melee spell attack. On a hit, the target takes cold damage and becomes Chilled until the start of your next turn. While Chilled, its speed is halved and it has disadvantage on the next Strength or Dexterity saving throw it makes.
At higher levels: 5th level: 2d8
11th level: 3d8
17th level: 4d8
Available for: Mage