what pokemon has the most evolution in a chain of evolutions (not counting legendarys if there are any evolvable ones.
If you mean pokemon that evolve, I believe it would be the eevee-lution.
Found Here opening onto Eevee:http://pokemondb.net/pokedex/eevee
And I'm afraid I can't give you a moveset (because my movesets are pure power). Sorry! :(
And many users would be happier if you looked these kind of questions up yourself: http://pokemondb.net/evolution
Sorry if this is not very useful, but the question is not very clear.
The longest chain is 3 and always has been, from the beginning. However with branched evolutions some Pokemon have more. Eevee is the most, with 7 evolutions (8 Pokemon in the chain in total).