Not a rule, per se, but really, there’s no need to have hyper-optimized characters in Wrath of the Righteous. Mythic takes care of the power level for you.
The Dazed condition is a lesser version of Stunned. Anything immune to stun effects is immune to daze, and effects that remove the stunned condition also remove dazed.
Magical Traps may be disarmed by any class. (Treat all characters as if they had the “trapfinding” class feature.)
No double-barreled weapons
Spell-Like Abilities do not qualify as being able to cast spells for prerequisites.
Alchemist: Alchemists are considered to be Arcane Casters and use their alchemist level as their caster level for qualifying for magical crafting feats, arcane strike, and the like.
Bard: If you have skill points invested in a skill that Versatile Performance overwrites, you may instantly retrain those skills.
Druid: Wildshape DCs are set by 10 + Emulated Spell Level + WIS.
Rogue: Rogue Talents that specify that they work once per day instead work once per minute, up to a number of times per day equal to the character’s rogue level.
Rogue: If a rogue archetype trades away Evasion, Uncanny Dodge, or Improved Uncanny Dodge, they can be reacquired as rogue talents at levels 2, 4, and 8, respectively.
Skald: The skald may use Spell Kenning an additional time per day for each three Skald levels they have.
Sorcerer: Upon gaining a level with a bloodline spell, if you already know your bloodline spell, you may instead pick any valid spell of that level.
Swashbuckler: The mythic ability “precision critical” allows the Swashbuckler precision damage bonus to be doubled on a critical hit.
Wizard: Wizards have the option of picking either Spell Focus or Scribe Scroll as a free feat at level 1. (PFS Option)
Wizard: A wizard does not need to roll to overcome the spell resistance of their familiar.
A prestige class counts as the original class for purposes of favored class bonuses upon level up. For example, a Human sorcerer going into the Pathfinder Savant prestige class may continue to gain an additional skill point, hit point, or spell known. A half-elf with two favored classes going into Arcane Trickster from ninja/arcanist can pick either of the favored class bonuses from her previous classes.
In general, archetypes that are restricted by race may be taken by any character. Run it by me just in case.
In general, archetypes that almost stack, but don’t because they both modify some esoteric portion of the class (such as both modifying the 20th level capstone ability) can stack - get with me and we’ll figure out precisely what gets traded out.
Ability Focus (on other “Bestiary” feats) are typically allowed. Ask first.
Ancestral Scorn, Dazing Spell, Dirty Trick Master, and Sacred Geometry are banned.
Deadly Aim works on touch attacks, just not splash type weapons. (Alchemist’s bombs, acid flasks, etc…: no. Scorching ray, Disintegrate, etc…: yes.)
Improved Dirge of Doom allows a will save against being frightened. (DC is 10 + 1/2 bard level + CHA.)
Monk-type Martial Arts styles (Crane, Dragon, Boar, etc) only work with Monk weapons and Unarmed Strike.
Quickdraw also allows for storing a weapon-like item as a swift action. Quickdraw allows for weapon-like items (wands, alchemist’s fires, etc…) to be drawn as a free action.
Aroden’s Spellbane, Blood Money, Possession, and Simulacrum are banned.
Mythic Dazzling Display allows mythic creatures a save against becoming frightened. (DC is 10 + 1/2 HD + Mythic Tier + CHA.)
If people pick classes that were introduced after Mythic Adventures, get with me and we’ll figure out a few mythic abilities for each tier that might benefit your particular class.
Wayang Spell Hunter and Magical Lineage don’t stack. (Not that I expect anyone to take Wayang Spell Hunter in this campaign.)
The returning weapon property returns the weapon to your hand immediately after throwing the weapon. (You can make a full attack with a single thrown weapon.)
The Fauchard is considered a martial weapon.
If the item isn’t legal in PFS, ask about it before assuming you can acquire it. Bracers of Falcon’s Aim, Quick Runner’s Shirt, and those boots for 5,000 that give Fast Healing 1 are right out.