Flame Blade

Casting Time: 1 action
Range: 5 feet
Components: V, M (a weapon)
Duration: Instantaneous
Make a melee attack with a weapon against one creature, on a hit, the target suffers the attack's normal effects plus 1d8 fire damage, and golden fire leaps from the target to a different creature of your choice that you can see within 5 feet of it.
The second creature takes 1d8 fire damage plus your spellcasting ability modifier.