Hi, im in the process of building a team for platinum and i picked leafeon as my grass type and im struggling with thinking of a moveset for it, leaf blade and swords dance are definitley in there but I cant think of what to do for the remaining two move slots, advice?

Leafeon really has no other physical options aside from Return, Quick attack, X-scissor and flail. Baton pass is really nice to move those SD boost to another pokemon. I'd go with:

-Swords dance
-Leaf Blade
-Return/Wish
-Baton Pass/Wish

makes alot of sense, ill probably go for baton pass and wish thanks, by the way if anyone else has any other suggestions please share them with me!

I'd Disagree with MC Leafeon has a lot of options
Leaf Blade
X-scissor
Aerial Ace - Bugs
Dig - Fire and Posion
Bite
Quick attack
Secret power
Return
Iron tail - Great for Ice

I'd Suggest
Leaf blade
Aerial ace
Dig
Swords Dance/Bite

I would suggest Baton Pass over Dig. If you see a Fire or Poison type, it would be better to BP your Swords Dance rather than try to use Dig imo.

AA has Bad coverage w/ grass and little more power than return when SE, Since leafeon has typically only two attack slots (two being taken for SD and BP/Wish) and if a 3rd slot is open, a utility move like quick attack or X-scissor which covers more grass-resisters than AA is the better choice, If using a CB set it may do.

Dig is one of the worst moves to use competitively. way too many teams have pokes that can get a free switch in with it's use and in many cases hit back with flying-STAB on leafeon. Not to mention how common EQ is to hit a predicted dig.

Bite can be useful, but leafeon's low speed won't allow many flinches, and leaf blade outdamages bite SE when netural and return comes close. Secret power can be combined with bite as well, but the overall low power will be risky to attempt paraflinch.

When factoring acc. Leaf blade does about equal damage as Iron tail to a pure Ice-type(not factoring in LB's crit boost), Leaf blade does better also as only articuno and abamasnow resist grass, X-scissor ko's abamasnow and any set would be foolish to stay in on articuno.

This is my moveset for my Leafeon.

Leafblade
Swords Dance
Synthesis
Last Resort