first, 4 the ppl who say u need 2 use music box to get him, theyre wrong. doesnt do a
thing.
second try dropping reviver seed and let mew pick it up. if u have friend bow, its almost
certain u'll get him at least on 3 or 4 try. i can normally get him 1 or 2 ith that. do
that and mew will be urs in no time

Go to Buried Relic be (be a leader and give the Friend Bow and have the Friend area of
Mew)then beat the 3 Regis and have the Music Box then go to the 36th floor or higher to
find Mew defeat it with 1 attack and it will join your team if it dosent do it again and
again until it join your team (If it joined your team you will go out of the dungeon)