Conjure Ice Blades

You summon 1d6 + your spell casting modifier swords made of ice that float around you. Any creature that starts it's turn or walks within 10 feet of the caster must succeed in a Dexterity saving throw or take 1d4 cold damage and 1d4 slashing per blade or half as much on a successful save.

Additionally, as an action, you can use one of the blades to make a ranged spell attack or melee spell attack. On a successful hit, the target takes 1d8 cold damage and 1d8 piercing damage. That creature must than make a Constitution saving throw or have their movement speed reduced by 10.

Casting this spell at higher levels allows you to summon 1d6 additional blades per level above 3rd.