Flame Shock

2nd-level Evocation
Casting Time: 1 bonus action
Range: 60 feet
Components: VS
Duration: Instantaneous

You conjure the spirits of fire to burn your foe from the inside out. The target must succeed on a Constitution saving throw or take 6d4 fire damage and be set on fire, or half as much damage on a successful one, avoiding the burning effect.
When you cast this spell, you can cast a second spell of 1st level or higher on your turn, but only if it deals fire damage.
At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage of the initial effect increases by 2d4 for each slot above 2nd level.

Source: Homebrew