A point in range springs forth a garden of deadly flowers that spew out caustic pollen, that whispers incantations spewing pollan that has can be changed for diferent scenarios. 

Once the spell is cast, a 10 ft. Diameter cylinder that can be cast within 100 ft. of yourself grows flowers. The caster choses 1 of 4 options from the spell and that choice can NOT be changed until the spell is cast again. Targets starting their turn in the area, or entering the area make a CON save DC (spell casters spell save DC). On success (for damage choice) damage is halved. On success (on condition choice) effects are nullified. On a fail save (damage choice) targets take full damage. On a fail save (Condition choice) Targets have that condition applied.

a cloud of dark specks that have no smell but feel like burning mosquito bites that do either 2d10 poison or 2d10 acid if the target remains in the area they take the damage again

a cloud of purple specks mists out a florol smell that puts creatures to sleep all those in the area make a constitution saving throw (if a hit occurs the target wakes up if they remain in the area they have to re roll the saving throw or become unconscious again.)

a cloud of greenish yellow specks with a putrid smell that make creatures gag and choke and empty there insides all those in the area make a constitution saving throw(each creature that is completely within the cloud at the start of its turn must make a Constitution saving throw against poison. On a failed save, the creature spends its action that turn retching and reeling. Creatures that don't need to breathe or are immune to poison automatically succeed on this saving throw.)