I enjoy Pathfinder, I really do, but some spells, archetypes, and feats are so worthless it bottles the mind. You know, when you're so confused that it's like your thoughts are trapped in a bottle. I'm sure all of us have come across a spell or archetype that have made us look at it, scratch our heads and then refuse to let other players pick them. Friends don't let friends make terrible decisions.
How bad am I talking about? Here are a couple of examples.
Archetype: Merciful Healer (Or as a friend calls it "Gimpzilla.")
From: Ultimate Combat
What do you gain: The Mercy Ability from Lay on Hands (kind of)
What do you are forced to pick: The Healing Domain, Channeling Positive Energy, a Deity that allows these two features.
What you loose: The 2nd domain, you cannot target undead with channel energy.
Meet Gimpzilla, the most ineffective cleric ever. It can't fight or eventually turn undead. It doesn't have versatility in it's domains, but it has the mercy ability. Well, kind of. The rules as written don't actually state that you have access to the mercy feats, so you can't really gain all that much from it.
I honestly have no idea what the appeal behind this class would be as anything other than a flavor NPC or character for a party with 7 people where you aren't loosing as much if your cleric is a super-gimp.
Spell: Haunted Fey Aspect
From: Ultimate Combat
A zero level Bard/Sorc/Wizard spell, with a duration of 1 round per caster level, and a target of the caster. Here is the description:
"You surround yourself with disturbing illusions, making you look and sound like a bizarre, insane fey creature. You gain DR 1/cold iron against a single opponent until the end of the spell, or until you take damage."
Congratulations, you have a DR 1/cold iron until you take damage. So you can use this spell to possibly ignore a single point of damage. Well, at least you look like an insane fey creature. That would be a handy disguise if it wasn't something that freaked people out and lasted longer than 2 minutes. Seriously just use ghost sound, it will attract less attention than this. It's a 0 level spell, and I feel it should be -1
(In all honesty, I actually found a use for this spell: Having a crazy illusionist sorceror pretend to be a crazy fey creature)