What Pain Bought

Until the end of your current turn, you siphon pain. You add 1d4 to the next attack roll you make, and creatures subtract 1d4 from their saving throws against your cantrips. Additionally, when you damage a creature with a weapon attack or a cantrip, you regain hit points equal to half the damage dealt, rounded down. After damaging a creature with a weapon attack or a cantrip, the spell ends.

At Higher Levels

 When you cast this spell using a spell slot of 3rd level or higher, the amount added to your next attack roll and subtracted from saving throws against your cantrips increases by 1d4 for every two slot levels above the 2nd. Additionally, you gain 10 temporary hit points for every two slot levels above the 2nd (i.e, 20 temporary hit points for casting this spell with a 6th level spell slot).