Big Punch

Your fist becomes encased in powerful magic. Make a melee spell attack against a target within range. On a hit, the target suffers your unarmed strike normal effects and takes an additional 2d8 bludgeoning damage. Damage against constructs and objects is doubled.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, increase the damage by 1d8 for each slot level above 1st.