What abilities did you pick for Parra?
I didn't give her much mana regen because Cyclone cancels all the zephyr stacks and I thought casting a lot didn't work for her!
the stun resistance is being applied to allies as well but I just discovered it is falling off way faster than I intended. Its still totally possible for duplicate monsters. For Parra I go for Shine Thief for extra power, and Tornado for even more power + saving 1/2 the Zephyr Stacks. Im pretty sure I got the others with Radiant Aurite afterwards too. I dont do many normal runs tho