Xavier's Knowing Strike

You brandish the weapon used in the spells casting and make a melee or ranged weapon attack with it that you can not have disadvantage with. On a hit, the target suffers the weapon attack as normal and becomes marked with a glowing aura of divination magic only visible to your allies until the end of your next turn. If an attack target's the creature before then, the creature makes the attack with advantage and adds 1d4 to the attack roll.

This spell increases the damage of the initial weapon attack by 1d8 force damage to the target on a hit. the initial damage increases by 1d8 at 7th level (2d8), 11th level (3d8) and 17th level (4d8)