I suggest either a ditto to save you from sweepers/tanks buffed up on bp, or a magnemite (lvl 5) with berry juice, sturdy, recycle, toxic, supersonic, and protect which can basically stall kill anyone as long as there is no entry hazards or burns. As for someone to bp to, I use a scrafty myself, which is bulky enough to withstand the switch in, and then with moxie only gets more and more powerful with the KO's (suggested moveset would be: dragon dance, drain punch, crunch/high jump kick, and iron head, a must for fairy type coverage).
