i find coice scarf ttar is the most effective... hes fast as shit.... he can trap psychics and ghosts with pursuit... and with his hit and run nature of being scarfed, he can avoid alot of counters... u just need rapid spin support to use his well... also i have a max hp max sp def sassy natured ttar... h e is an amazing special tank that can shrug off special attacks almost as well as blissey (when there is a sandstorm) but he can also hit hard as shit even without investment in attack