Arcane Target (HB)

You use a bit of gem dust (5 gold worth) to magically augment your senses with the spell while starring at one target you can see within range. This spell grants you insight into that target's defenses increasing your ability to land attacks on them. You gain a +1 bonus to your melee/ranged weapon or spell attack rolls against the target for the duration, provided that this spell hasn't ended, or you lose concentration. This spell does not stack with Hunter's Mark, and if either is cast again it will negate the previous cast and apply the new one.

At higher Character levels: This spell's enhancement increases by +1 when you reach 7th level (+2), and again at 16th level (+3)

At Higher Spell Slot Levels: When you cast this spell using a spell slot of 2nd or 3rd level, you regain the expended spell slot after 2 hours. If cast using a spell slot of 4th or 5th, you regain the expended spell slot after 1 hour instead.