Mario with Lasers
Unfazeable
...You DO Know There Was No Such Thing As A Leafeon In G/S/C Right?
...Huh, that's what I was talking about. You won't be able to get Leafeon in Johto, but MAYBE Kanto or some other after-E4 area . But NOT pre-E4 Johto, specially NOT Ilex Forest/Ice Path.