Bloom of Doom

Choose a point you can see on the ground within range. A beautiful garden of orchids sprouts up in a 20-foot cube centered on that point. The flowers then scatter pollen into the aerial volume of the cube. The cube creates an area that is lightly obscured for everyone but the caster for a minute or until a wind of 10 mph or more disperses the pollen. Each creature in the area must make a Constitution saving throw or suffer one of the following effects which the caster chooses upon casting the spell.

Toxic Pollen - The flowers scatter poisonous particulates that damage a creature's airways and bloodstream. On a failed save a creature takes 3d6 poison damage and becomes poisoned for a minute or until the pollen is dissipated. On a failed save the creature takes half damage and is not poisoned. The area of the spell remains clouded for a minute, and any creature that passes through takes 1d6 poison damage for every 5 feet of the cloud they cross, they also take this damage if they end their turn in the cloud.

Irritant Pollen - The flowers scatter acrid pollen that damages the eyes and mucous membranes of a creature. On a failed save a creature takes 3d6 acid damage and becomes blind for a minute or until the pollen is dissipated. On a failed save the creature takes half damage and is not blinded. The area of the spell remains clouded for a minute, and any creature that passes through takes 1d6 poison damage for every 5 feet of the cloud they cross, they also take this damage if they end their turn in the cloud.

Beguiling Pollen - The flowers scatter a psychoactive chemical into the air, which activates upon inhalation. On a failed save a creature becomes charmed for a minute or until the pollen is dissipated. On a failed save the creature is not charmed but has disadvantage on insight, perception, and investigation, as the remnants of the pollen cloud their senses. At the end of each of their turns they can reroll the saving throw to break out of the charm or disadvantage states that affect them. The area of the spell remains clouded for a minute, and any creature that passes through takes 1d4 psychic damage for every 5 feet of the cloud they cross, they also take this damage if they end their turn in the cloud.

Explosive Pollen - The flowers scatter a set of two reactive pollens which explode when mixed. On a failed save a creature takes 2d12 fire damage, or half as much on a successful save. The area of the spell is lit on fire for a minute, and any creature that passes through the space or ends their turn there takes an additional 1d8 fire damage for every 5 feet of the cloud they cross, they also take this damage if they end their turn in the cloud.