Corkscrew, once you get to Drayden, your lowest-leveled team member must solo him or faint trying. If it does faint, the next team member in line (arranged from lowest to highest level) has to come out. If it faints, the next one comes out, and so on. After Drayden, you may heal at Opelucid Pokémon center for the usual fee, plus 1 more of the highest-valued Pokéball per fainted team member. Are you up for the challenge?
Jimera0, that's quite a fun challenge, although it rules out all of my current team members as they have all evolved at some point!
ShinySkarmory, I've accepted your challenge aswell.