Auril's Flowers

Stalagmite, and much smaller, sized shards of ice erupt from the ground up from a point you can see within a range of 60 feet. Each creature within a 10 foot radius centered on that point must make a Dexterity saving throw. If failed, the creature takes 4d8 cold damage and is knocked prone. If the creature succeeds on the saving throw, they take half the damage and remain upright. If a creature is killed by this bed of flowers, their body is turned to ice and the damage roll for the next use gets one extra dice.