Arcane Blade

Evocation

Level: Cantrip
Casting time: 1 Action
Range: 5 feet
Components: V, M (a weapon)
Duration: Instantaneous

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell's range, otherwise the spell fails. On a hit, the target suffers the attack's normal effects, and choose between damage type (Fire, Cold, Acid, Posion, Necrotic, Lightning, Radiant & Force) leaps from the target to a different creature of your choice that you can see within 5 feet of it. The second creature takes fire damage equal to your spellcasting ability modifier. This spell's damage increases when you reach higher levels.

At higher level

At 5th level, the melee attack deals an extra 1d8 of damage chosen to the target, and the damage chosen to the second creature increases to 1d8 + your spellcasting ability modifier. Both damage rolls increase by 1d8 at 11th level and 17th level.