Polymorph, Greater (3.5e Spell)
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|Components:||V, S, M|
|Casting time:||1 round|
|Target:||Willing living creature touched.|
This spell functions as Polymorph, save that the assumed form can't have more Hit Dice then your caster level, to a maximum of 20 HD at 20th level.
 Material Component
A empty cocoon