Arms of Hadar

You invoke the power of Hadar, the Dark Hunger.
Tendrils of dark energy erupt from you and
batter all creatures within 10 feet of you. Each
creature in that area must make a Strength saving
throw. On a failed save, a target takes 2d6
necrotic damage and can't take reactions until its
next turn. On a successful save, the creature takes
half damage, but suffers no other effect.
• 2nd level or higher, the damage increases by 1d6
for each slot level above 1st.