Arcane Sneak Attack

Chaos Magic

Charge a weapon with mischievous energy to make Sneak Attacks more deadly.

You touch a weapon within range and infuse it with mischievous energy to better exploit a foe’s open defenses. The next time that weapon is used to make an attack it deals an additional 1d4 force damage on a successful hit. If that attack would be considered a Sneak Attack (see Player's Handbook: Rogue for details) it adds 1d6 instead.

The effect is lost at the end of your next turn or after an attack with the weapon is made, regardless of if the attack was successful or not.