Instead of Nuzlocke, like in pokemon, we have Skylocke.
Rules:
Can't change skylander unless your previous one needs to rest or the elemental zone changes.
If zone changes you can change to a skylander of that zone eg. Swarm goes into a fire zone change to ignitor.
Have to pick 30 or less skylanders. Any choice.
If you go into an elemental zone with a skylander of that element you CANNOT change skylander eg. Zap goes into a water zone, can't change.
You can use magical items as many times through the skylocke.
Try to beat story mode!
Magical items count against how many skylanders you have! eg. 26 skylanders 4 magic items= 30 toys
If a skylander gets defeated then you cannot use it for the rest of the story mode.
Can use as many giants, lighcore or whatever as long as you have a count of 30 or less toys.
Try on nightmare mode it is quite fun

Also say how many skylanders you have left to see how well you did.