Mob For warped forest

This is an idea for a new warped forest mob: Warped stems. These mobs would be 'Rooted' into the ground kind of like aechor plants from the aether mod. They would have no hitbox because if you collide in one you get a new effect called warped venom. warped venom would act like poison but also give you slowness as well. If you kill a Warped stem you would get a new item called a twisted thorn. This new item could be put into a brewing stand to make potions of warped venom. Warped stems could be rooted on all sides of a block like shulkers do. They would be passive but still dangerous.