Ambush

You become invisible for the spell’s duration, granting advantage on all Dexterity (Stealth) checks to remain hidden. The invisibility last for the duration of the spell, however, moving 5 feet or more from your position when you cast the spell will end the effect.

Using a Higher-Level Spell Slot. When you cast this spell using a spell slot above 2nd level, the damage of your first attack increases by 1d6 for every slot level above 2nd.