Ledian

Type Tier
Bug / Flying UU
Statistics
Stat
HP
55
313
Atk
35
168
Def
50
198
SpA
55
208
SpD
110
318
Spe
85
268
Name Item

Baton Passer

Leftovers
Moveset
~ Baton Pass
~ Agility
~ Light Screen
~ Reflect

If they don't have a pseudo-hazer, Baton Pass Agility to a sweeper. If they do, Reflect or Light Screen to help out your team.

Other Options

Barrier could be Baton Passed too.

Opinion

One of the worst fully evolved Pokémon in the game. He cannot do a single thing at all. Seriously, the only stat he has is Special Defense, and that's negated by horrible HP. Don't say I didn't warn you.

Counters

Basically anything that can attack.