Seriously, just use either Knock Off or any halfway decent fighting type. Taunt and Toxic users help too. Also, it can't do shit to special walls. Reuniclus sets up in its face wit Clam Minds and crushes with boosted Psyshocks or Focus Blasts. Latias with clam Mind is pretty godo at that too, just hope it doesn't crit with Ice Beam if it knows it.
>>30859600Best set is Recover, Ice Beam, Thunderbolt, and Thunder Wave. If you want to be a weenie you can switch out bolt-beam for Tri Attack and Shadow Ball and hope you can get lucky with Tri-Attack. Some people also prefer Toxic over thunder wave, but I've had way more success with Thunder Wave and the bolt-beam combination.