With Legendaries: Darkrai, Weavile, Zoroark, Honchkrow, Tyranitar without Sand Stream (dream world), Drapion
Without: Everybody except Darkrai, who is replaced by Houndoom.
Darkrai: The only Pokemon that can beat Arceus with regularity. It should know:
Weavile: A sweeper. It should know:
Zoroark: Use the moveset I gave on this site.
Honchkrow: A hard-hitting Pokemon. It should know:
Tyranitar: While the ability Tension isn't as good as Sand Stream, in this case it is. Tyranitar might not be as good without Sand Stream, but this makes him a better choice for this team. He still has great stats afterall. It should know:
Drapion: Only one weakness. Should know:
Houndoom: Should know: