Thinking along the lines of narrative game design elements and mixing a few in with a more traditional system for Kainis. One idea I've toyed around with is that each player has a number of 'Story Points' to spend on special abilities. These abilities are determined partially by a rough character class outline and the rest through choices made during character creation. Here are a few I came up with for The Archer.
First off The Archer does not keep track of arrow count unless the GM deems it necessary in a 'limited resources' type of game. So running out is something that needs to have impact in the game.
"My Last Shot" - This means The Archer is using their very last arrow on their character. Done at a time when it really needs to count. It results in gaining an improved chance of success and and improved amount of damage to the target. Cost: 1 point.
"Scrounging for Arrows" - Usable after The Archer runs out of arrows in one way or another. They spend a few rounds looking over the bodies of enemies or through a suitable location that may logically have a few laying around. For every story point spent they get a single arrow. Keep track of these because when they are used you have two choices. Use the arrow normally and you gain the story point back OR use the arrow with an increased chance to hit and you lose the story point you spent for that arrow.
"For your consideration" - This is done to perform a trick shot in a non-combat situation. By spending one point you automatically succeed in making a simple trick shot while not under any sort of duress.
"Using what is at hand" - Used during close combat where ranged attacks aren't very feasible. The Archer is able to use an arrow as a stabbing weapon using their ranged attack skill although the damage is half of a normal arrow hit. Cost: 1 point.