How about, a prestige system. You can choose your path, eyes, abilities, or what have you. Only people with certain abilities and a certain level can steal eyes if you want this idea, but this would create everyone with eyes, or sage mode. Prestige can work for Sages, and kekkai genkai abilities. You can only choose one or the other. When you prestige for the last time, you trade your kekkai genkai for your sage abilities, or kekkai genkai ability, and gain 1 eye of your choice. This will make it more rare. Also you will have a chance at it all again for the second eye, or you can steal them at that level, in certain areas, under certain circumstances? Just throwing some brainstorming out there.. So: Prestige: go back to level 1, gain sage and semi faster xp bonus Prestige 1: Sage or kekkai. (can only pvp people on their level 10 down and up) Prestige 2: 1 eye (cant pvp anyone under their level under prestige 1) Prestige 3: 1 eye (matches the other eye, manditory)(cant pvp anyone under prestige 1) Prestige 4: change 1 eye (cant pvp anyone under prestige 1) Prestige 5: Sage with both eyes (cant pvp anyone under prestige 3)