Rogue Enhancements

Brain or Brawn: Starting at 4th level, and every 4 levels after, you select either brain or brawn. Your choice may change each time you gain this ability, but you must take them in order. For example, if at 4th level you select Brawn I, at 8th level your choices are Brawn II or Brain I. Once selected, you will have one more choice to make.

Brawn I: Select one of the following:
+1 attack bonus to sneak attacks.
+2 bonus to cmb checks. 

Brawn II: Select one of the following:
+1 dodge bonus to armor class.
Opening I: During a full attack action, you can choose to forgo any number of attacks in order to count an equal number of attacks as flanking (attack bonus and sneak attack, if applicable).

Brawn III: Select one of the following:
increase the dice you sneak attacks with by one step.
A bonus Feat.

Brawn IV: Select one of the following:
Opening II: During a full attack action, you can choose to forgo any number of attacks. You count 2 attacks as flanking for each attack you forgo. You gain an extra +2 bonus to these attacks if you also have Opening I.

Chink in the armor I: When you spend a full round studying an opponent (no further than 60 ft away), you may consider him flat footed for the remainder of combat for purposes of sneak attack. You may have your Int modifier worth of enemies "studied" at any given time.

Brawn V: Select one of the following:

Chink in the armor II: You may spend a full round studying a group of opponents (within 30 ft. of each other) in order to consider them flat footed for the remainder of combat. If you have Chink in the armor I, you may now use it as part of a full defense action against any opponent you are engaged with.

Brain I: Select one of the following:
+2 bonus to skill of choice.
Select a 1st level spell usable 1/d.

Brain II: Select one of the following:
Erudite: select a knowledge skill. It is considered a class skill from now and you gain a +2 bonus. If you have 5 or more ranks, you gain a +2 attack bonus to sneak attack against creatures associated with that knowledge skill, even if they are immune to sneak attack damage. If you have 10 or more ranks, you can deal sneak attack damage to them, even if they are normally immune.

Brain III: Select one of the following:
select a 3rd level spell (or lower) usable 2/d.

Brain IV: Select one of the following:
Expanded magic: Double all per day uses of spells gained with the Brain class ability (this applies to future selections as well).
Enhance UMD: if you activate an item and roll double the Use Magic Device DC or higher, you do not expend any charges from the item for that particular use. No one item can benefit from this ability more than 3 times per day.

Brain V: select a 5th level spell (or lower), usable 3/d.