Glass Garden

5-level Transmutation

You slam a hand holding the material components onto the ground. The ground in a 30-foot radius centered on you shakes before transforming into glass, and sharpened glass shards emerge, shooting upward. The area becomes difficult terrain for the duration. When a creature moves into or within the area, it takes 1d6 piercing damage for every 5 feet it travels.   As a bonus action on your turn, you can quickly extend a glass shard to pierce a creature within the affected area. The creature must make a Dexterity saving throw or be pinned by the glass, becoming restrained, and take 4d6 piercing damage.   Until the spell ends, you can direct the sharpened glass shards towards another creature in the area to attempt to restrain them as a bonus action on each of your turns. You can affect only one creature like this at a time.