Every team should had sleep absorber, that can easily take Hypnosis or Spore. In OU it may be STalking Heracross or Resttalk Milotic. In Ubers Rest Spout Kyogre is good. But in OU best is probably Blissey + Gengar. Put Blissey sleep, switch to Gengar so you can Absorb punch and hit back with Shadow ball or Something. And everything works really. Sleep clause is in effect all competive battles as a basic rule. Altough some play ers take it sometimes of so you can abuse Dark Void / Spore / Hypnosis / Compoundeyes Sleeppowder.
_________________By St. Jimmy.
If you have any problems with breeding, Egg moves, IV:s or EV:s, you can ask me. Feel free to ask other things related to competive battling.