Dancing Blade Garden

When you cast this spell choose any number of creatures and objects you can see within range. Those creatures and objects you have chosen will be unaffected by this spell. Everything else within range, creature and object, will be. As you cast the spell you touch the weapon, used as the material component for this spell, to the ground which sends out a ripple of magic across that ground out to the maximum range. Immediately conjured blades manifest up from the ground to 15 ft high - any creatures and objects that are to be affected by this spell and those that can make a Dexterity saving throw must do so or take 5d10 magical piercing damage. Those that succeed the saving throw do not take damage.

The blades then shatter into tiny fragments that almost look like metal pollen, but are actually now tiny serrated blades. These blade fragments whirl around in all directions to cover the entire area of the spell. Any creatures and objects that are affected by this spell must make another Dexterity saving throw if able. Those that fail take 5d10 magical slashing damage while those that succeed take half damage. The fragments then disappear.

Creatures that took both piercing and slashing damage from this spell have their speed reduced to zero until the start of your next turn and must make a Constitution saving throw and if they fail they lose concentration on any spell they are concentrating on and their Constitution score is reduced by 1d4. This reduction can only be recovered through either a long rest or by the Greater Restoration. If this reduction causes their Constitution to become 0 they immediately die.