The ranger spell Instant Enemy reads:Quote:With this spell you designate the target as your favored enemy for the remainder of its duration. Select one of your favored enemy types. For the duration of the spell, you treat the target as if it were that type of favored enemy for all purposes.
With the kicker being "for all purposes." Does this mean that my ranger with a favored enemy: undead and an Amethyst Pyramid ioun stone can use Instant Enemy to become invisible to any one target?
Other possible abuses:
-With favored enemy (animal), use Animal Growth as a far more powerful substitute for Enlarge Person.
-Use Speak with Plants/Animals as a substitute for Tongues
-Use Charm Animal/Command Plants to be a backup bard
-Make an ooze vulnerable to critical hits by changing its type
Unless I am (quite possibly!) reading this wrong.
Read the spell block, it is an enchantment not a transmutation or such. Mechanically it fools your character into thinking the opponent is a favored enemy so you can use your abilities on it. The actual target suffers or changes in no way, unless it pertains to your characters abilities based off of favored enemy class ability.
If the target is an invalid target to the spell you cast, it fizzles as normal.
So to answer your question, no it isn't as broken as you figured it might be.