As an action, you can create this vial full of sticky webs. As an action, a creature can throw this bomb at a creature within 5 meters, shattering it on impact which unleashes writhing strands of webbing that wrap up the creature like a mummy. The creature must make a Reflex saving throw.

On a failure, it is restrained for the duration.

A creature restrained by the cocoon, or one that can touch the creature, can use an action to make a Brawn or Nimbleness check (its choice) against your spell save Difficulty.

On a success, the target is freed.

The cocoon has 10 Defense, 1 Soak, and 15 Health. When reduced to 0 health, the cocoon is ripped open, which frees the target.

Augment

You can expend 1 or more catalysts so while restrained by this spell, the creature takes 2d10 bludgeoning damage at the start of each of its turns for each additional catalyst expended. You can also increase the cocoon’s Defense by 2, and increase the cocoon’s Health by 15 for each additional catalyst expended.