As an action, you ensnare a creature that you can touch or see within 10 meters with a writhing mass of thorny vines that wrap around it. The creature must make a Reflex saving throw.
On a failure, it is restrained for the duration.
On a success, the target is freed.
You can expend 1 or more mana so while restrained by this spell, the creature takes 2d8 bludgeoning damage at the start of each of its turns for each additional mana expended.
You can target one additional creature for each additional mana expended. The creatures must be within 5 meters of each other when you target them.