Toxic Bloom

4th-level conjuration

Casting Time: 1 action
Range: 60 feet
Components: V, S, M (drop of poison, flower petals, pinch of dust)
Duration: 1 minute
Classes: druid

As an action, you call forth a 5 foot wide plant that erupts from the ground at a point you can see. Once sprouted, it immediately blossoms, releasing toxic fumes in a 15 foot radius. When a creature enters the affected area for the first time on a turn or starts its turn there, it must succeed on a Constitution saving throw or take 18 (4d8) poison damage and become poisoned until the end of its next turn.

The plant has an AC of 8, 50 hit points, and vulnerability to fire damage. The poison dissipates naturally after 1 minute, or until a strong wind blows it away. As long as the plant remains, if the caster is within 60 feet they can spend their bonus action to cause it to release additional fumes, restarting the effect.