Stamina System
The stamina system offers new powers for every combat feat in the RPG line. Yes, you read that right: it specifically lists every combat feat in the whole line and then grants each feat new powers. Right from the start, the system offers options for you to just give the system to fighters or to give it to all martial characters, depending on your preference. Stamina is a new resource that allows martial characters to boost themselves and use their feats in new and exciting ways. It regenerates relatively quickly between battles, allowing you to enjoy an entirely new mindset to your daily exploration; a party of stamina-users benefits from hit and run guerilla tactics, emphasizing the value of mobility, stealth, and timing (as opposed to the mindset of "buff, buff, buff, speed through!"). Stamina lets you boost your effectiveness or change the rules of the feat in your favor. These special stamina powers are called combat tricks. While I'm sure that the ways to use stamina to boost your effectiveness will be quite popular (like Critical Focus, where under certain conditions, you can increase your critical multiplier, potentially multiple times if you roll high enough), I'm a fan of the combat tricks that let you retroactively apply an effect (like declare a Stunning Fist after you already know your attack connected), and my absolute favorites are the ones that let you trick your opponent through devious tactical play. For instance, the Combat Style Master combat trick allows you to spend stamina to switch your styles as an off-turn free action. So you can lure people into attacking you and then suddenly be in Snake Style before they can even call off the attack! In the same vein, I also really enjoy the combat tricks that let you use your powers when you normally couldn't, since that has two cool psychological effects: not only can it present great "gotcha" moments, but once your enemy knows you can, say, spend stamina to take a second attack of opportunity against them from the same opportunity, it changes the way they view your threat, and it might allow you to control their actions without even spending your stamina!