white herb may be an answer for that...
oobemu
@ leftovers
Ability: telepathy
EVs: 252 hp/ 252 SpA / 4 Def
Nature: bold (+Def, -Att)
~ Reflect/light screen
~ Simple beam
~ Psychic/thunderbolt/Shadow ball /troll
~ Psych up
and
Omastar
@white herb
ability: breakable armor/swift swim
EVs...