You slam a crystal into the ground and use it as a catalyst to produce several quartz prisms. The prisms refract light and create a large visual distortion within the area. Any creature in the area has their senses overwhelmed. They have disadvantage on attack rolls and Wisdom (Perception) checks.
The earth around you begins to ripple, and a directed shock wave of tectonic force is released that shoots through the ground.
You cause the ground to shake along a 30-foot line originating from you and extending in any direction you indicate. Any creature caught standing within the area must make a Dexterity saving throw or fall prone. Any creature that was concentrating on a spell and fails this saving throw immediately breaks concentration.
For this spell's duration, you may apply this effect as a bonus action on each of your turns.