Bumping this thread to commemorate the official death of the rogue class.
That's a campaign trait. Most GMs won't allow you to take a campaign trait unless they are specifically running that campaign. Also, if you're looking for a trait that does in Rogues, here's a religion trait for you:
Source Faiths of Purity pg. 17
Your knowledge of dwarven history and religion gives you an excellent mind for defensive strategy and tactics. You are not flat-footed when you are an unaware combatant. This includes a surprise round that you don’t get to act in, and before you get to act at the start of a battle.
Back to the thread subject for a moment, an enterprising poster has brought another terrible feat to my attention, so I am quoting it here:
COMBAT PATROL (COMBAT)
Source Advanced Player's Guide
You range across the battlefield, dealing with threats wherever they arise.
Prerequisites: Combat Reflexes, Mobility, base attack bonus +5.
Benefit: As a full-round action, you may set up a combat patrol, increasing your threatened area by 5 feet for every 5 points of your base attack bonus. Until the beginning of your next turn, you may make attacks of opportunity against any opponent in this threatened area that provokes attacks of opportunity. You may move as part of these attacks, provided your total movement before your next turn does not exceed your speed. Any movement you make provokes attacks of opportunity as normal.
Yep, you have to move for all of these attacks you're threatening, you give up a full-round action to set this up, and if you run out of speed you're done.
PF nerfed casters?
Magical Lineage, Spell Perfection, Arcane Concordance, Stack Metamagic, Channel the Gift, Samsaran's Mystic Past Life, & Metamagic Focus (3rd party, but pfsrd'd).
PFSRD does not mean "official" in the slightest. There's a ton of insane 3rd party shit on the pfsrd. I can probably shit out something retarded and get it listed on the PFSRD under "third party" too. We don't care about 3rd party content in Pathfinder unless it's Dreamscarred Press. "Stack Metamagic" and "Metamagic Focus" are both 3rd party content. They might as well not exist. If you're looking for broken Pathfinder spells, there's also shit like Source Severance and Bestow Grace of the Champion (crazy for Oracles).
Arcane Concordance is a bit ridiculous, but it's also a Bard only spell, and the Bard sucks at metamagic, barring the use of rods. I think the AoE aspect of it makes it a bit too good though.