Thrumming Bolts

You propel three metal bolts at targets within range, debilitating them through violent vibrations. Make a ranged spell attack for each bolt which deals 3d6 piercing damage and inflicts the following effects based on how many hit a target:

• 1 Bolt: 3d6 piercing damage, and the target must make a Constitution saving throw or have their speed reduced by half until the start of your next turn.
• 2 Bolts: 6d6 piercing damage total, and the target must make a Constitution saving throw or have their speed reduced by half and have disadvantage on Dexterity saving throws until the start of your next turn.
• 3 Bolts: 9d6 piercing damage total, and the target must make a Constitution saving throw or have their speed reduced to zero, have disadvantage on Dexterity saving throws, and all attacks made on the target have advantage until the start of your next turn.

At Higher Levels: When you cast this spell using a spell slot of 5th or higher, the number of metal bolts is increased by one for every two levels above 3rd. Additional bolts hit above three do not create further effects.