Chaos Blade

You brandish the weapon used in the spell's casting, wreathing it in chaotic prismatic magic and make a melee spell attack against one creature within 5 feet of you. On a hit, the creature hit takes the impact of the normal weapon attack. In addition chaotic magic leaps from the target to another creature you can see within 5 feet of it. The creature takes your spellcasting ability modifier of the damage type rolled on the table below.

The spell's damage increases when you reach certain levels. At 5th level, the initial attack deals an additional 1d8 (roll from table) damage to the initial target hit, and the damage to he second target increases to 1d8 (roll from table) damage + your spellcasting ability modifier. Both damage rolls increase by 1d8 at 11th level (2d8 and 2d8) and 17th Level (3d8 and 3d8).