Martial Multiclass Feats
Bellicose Assassin [General]
Your skill as a warrior combines with your skill as a stealth killer
Sneak attack +2d6, battle clarity (Reflex saves) class feature, ability to use 1st level maneuvers
Your warblade and rogue levels stack with eachother for determining the damage of your sneak attack class feature. Your rogue levels also count for 3/4 to your initiator level instead of the normal half.
Your rogue and warblade levels stack for determining the purposes of when you achieve the battle ardor, battle cunning, battle skill, battle skill and stance mastery class features.
Hieratic Champion [General]
Your skill with controlling positive or negative energy and skill in ignoring damage to your body begin to grow at the same rate.
Ability to turn or rebuke undead as a 3rd level cleric, steely resolve class feature, ability to use 1st level maneuvers.
Your crusader and cleric or paladin levels stack for the purposes of determining the strength of your turn/rebuke undead class feature. Your cleric levels count for 3/4 of your initiator level instead of the usual half. Your cleric and crusader levels also stack for determining the power of your steely resolve class feature.
Sortilegic Swordmage [General]
You can combine your martial prowess with your power as an arcanist.
Ability to use 2nd level arcane spells, ability to use 1st level maneuvers, AC bonus class feature
You add your Int or Cha score (whichever is higher) as a bonus to your AC instead of your Wis. This bonus still does not stack with bonuses to AC from Wis, such as from the monk or the ninja. Your levels in classes that grant arcane spellcasting count as 3/4 of your initiator level instead of only half, unless it would grant full initiator level per character level(such as a eldritch knight). Your swordsage and arcane caster classes stack for the purposes of determining the benefits granted by your discipline focus.