Elixir of the Blooming Thorn

The effects of this elixir last for 8 hours. This elixir contains a thorny sapling within it. When you drink this elixir's contents, the sapling immediately starts growing within you. After one minute it blossoms, as thorns and vines grow from your skin and cover it. You gain the effects of the Barkskin spell for the next 8 hours. Additionally, during that time, you may use a Bonus Action once to exhale a cloud of deadly poison. When you do so, creatures in a 20-foot Cone must make a Constitution saving throw (save DC 13). On a failure, a creature takes 4d6 Poison damage and has the Poisoned condition for the next minute. On a success a creature takes half as much damage.