Eldritch Strike

You point a finger or a weapon at a target you can see. The arcane grants you insight into the target's defenses while steading you. On your next turn, you gain advantage on your attack rolls against the target, provided that the spell hasn't ended. You ignore half and three-quarters cover, you roll max damage from your attacks if you beat the AC by a difference of 8, and you crit on a 19 or 20.

At higher levels: If you cast the spell using a spell slot of 3rd or higher, then the AC lowers by 1 and the duration of the spell increases by 1 round.