[Ragnarok-X]

i think pretenders in general are immune or rather not effected by this spell.

Oh and a tip when playing man: Get a few crones, they usually have nature 3 and are VERY weak. Not just transform them, you usually (at least in my game) get Chims, all kinds of drakes or even Wyvern. The good thing about this is the increased protection AND the movement, i really like to have my strong mage cranes fly around at 3 provines per turn. it comes very handy indeed !