Spring Amber (Spell)

Spring Amber is a 4th level Conjuration spell exclusive to the Spring Cleric. Touch a creature to wrap it into a cocoon with 13 AC and 100 Hit Points for 1 minute. An unwilling creature must roll a STR Saving Throw to prevent being caught.
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==Description==
You can touch a creature and wrap spiritual roots around it forming an ethereal appropriately sized cocoon as they harden into an amber-like appearance, rendering the creature paralyzed inside. 
The cocoon has an AC of 13 and 100 Hit Points; it cannot be canceled before the end of the Spell's duration. 
The only ways to leave it are dispelling it or breaking it. A non-willing creature must roll a Strength Saving Throw to fight off the roots before they are trapped within.