The Amishlocke challenge. Basically this is the standard nuzlocke with a few extra rules in place. First off, obviously, no electric type Pokemon or using the PC system. Thus the second rule is, only 6 Pokemon are allowed to be kept. (6 total, not 6 in the party and x amount in the box. 6 in your party and 0 in the box) The third rule is that you aren't allowed to use Pokemon centres for healing or man-made products, i.e. potions, antidotes etc. (POKEBALLS ARE ALLOWED) Following on from the third rule is that if you are going to heal your Pokemon you must use a berry or herb. The fourth rule is that if your Pokemon isn't cured of a status condition before leaving battle, it is considered useless and must be released.

This is just a thought so let me know what you think and I may attempt one for X and Y