Gorilla Grip: You have learned to use the iconic power of the Strongarm Warriors. Your strength is unequalled and no blade, as large as it can be, can elude your grasp. At 1st level, your penalty to attack rolls when using a weapon one size category larger than yourself is negated. You may use a weapon two size categories larger than you at a -2 penalty.
A weapon two size categories larger than you may be used as a reach weapon, but does not prevent you from attacking foes adjacent to you. To wield it properly, a Warrior needs more space. He is considered taking the space of a creature one size category larger on the battlefield. If he has to
squeeze, he may not attack at all.
At 3rd level, you suffer no penalties to your attack rolls when wielding weapons two size categories larger than you.
At 5th level, you may treat any two-handed weapon as a one-handed weapon (or vice-versa) whenever doing so is advantageous to you. For example, you may wield a Longsword or a Greatsword as a two-handed weapon for the purpose of determining strength bonus to damage and modifiers to disarm rolls, but as a one-handed weapon in order to wield a second in your off-hand.
At 7th level,
Stylish Flurry: Your mastery of combat and huge weapon inspire dread in your foes. When hitting a foe with multiple attacks during a round, using a weapon larger than you, you may demoralize him as a free action. To make use of that ability, you must use power attack for at least a -1 penalty.
Additionally, you may make a Perform (Weapon Drill) check in place of an Intimidate check to demoralize foes, as well as Bluff checks to feint in combat.
Momentum:Sharp Wall:The Will to Cut: At 5th level, you learn how to crash your blade hard enough in your enemies that neither armor nor shield will let them stay up. This is treated just as a normal martial maneuver: you must ready it and expend it normally. It is a 5th level strike, and does not belong to any discipline. If this strike hits, it deals an additional 1d6 per initiator level points of damage to your opponent. If it misses, roll damage normally, but the strike deals only half that value, as nonlethal damage.
Swatting the Flies: Your weapon is massive enough to bludgeon ennemies to death, and is a bane smaller creatures. When you use a weapon one size larger than you, you may initiate a bull rush against creatures two size smaller than you as part of the attack. You do not have to enter its space. The creature is pushed five feet back for every 10 pts of damage your attack dealt, miminum five feet. When using a weapon two size categories larger than you, you may use this ability against creatures one size category smaller than you.
You may now choose to deal Bludgeoning damage with any two handed weapon instead of its normal damage type, without any penalty.
When hitting a swarm with an oversized weapon, you deal normal damage.
A Hot Knife Through Butter: At 7th level, you know how to punch harder than an angry red. When using Power Attack with at least a -5 penalty, you multiply by 1.5 all numeric variables of your damage rolls. Only your damage dices are empowered.
Sundering Cleave: You may strike even squeezed in a hallway, and chop through waves of soldiers in one slice. When you attack a foe through reach, you may strike all other enemies between you and your target. You use the same result on your attack roll, but may only threaten a critical hit to your main target. When squeezing, you may try to attack normally by slashing through the walls in one sweeping strike, in a way similar to attacking as noted above. If you manage to deal at least one point of damage to the surrounding objects, you may deal damage to your foe. You may also use an oversized weapon while being swallowed whole.
Cut 'em in half: Like the Vorpal weapon enhancement, except you cut enemies of at least your size, and at most one category larger than your weapon, completely in half on a natural 20. This has appropriate effects, and also works on opponents that are otherwise immune to fort-saves. Doesn't work on swarms, as well as other creatures whose anatomy isn't impaired by such a gruesome fate, as oozes.