Riddle's Rumble (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Components:||S, V, M (small iron anchor pendant)|
|Duration:||Concentration, up to 1 minute|
Once per turn, when the empowered creature uses half its movement to perform a jump in place they land with force. All creatures within a 10ft. radius must make a Strength saving throw or take 1d10 magical bludgeoning damage and are knocked prone. On a success the creature takes half damage and is not knocked prone.
At Higher Levels. When you cast this spell using a spell slot of Xth level or higher the damage increases by 1d10 per spell slot level. Additionally, if you cast this using a 4th level spell slot or higher the creature is immune from forced movement and being knocked prone.