Vasha's Hefty Hammer

You form a two-handed weapon of your choice in your hands and make a melee spell attack against a creature or object in range. On hit you deal 1d10 bludgeoning damage. Whether the attack hits or not, the target and all creatures, except yourself, within 10ft of the target make a Dexterity Saving Throw. On a failed save the creatures take 2d8 force damage or half on a successful save and cannot take reactions until the start of your next turn.