Mew is a really interesting pokémon for obvious reasons:
- good type
- big movepool (understatement)
- moderate high stats overall
- good team member.
From up to gen III (that I know) It seems to be the best baton-passer that ever existed.
Because it can cover itself against its most crippling weaknesses to suit your team.
If you can give me another pokémon who can reach, even his tip in this role,
let me know...