hmm thanks for hte advice Great Sage. I thought about it some more and Regirock can fill the role of special wall who isn't hurt by sand. 252 HP, 252 Sp def, 4 Def (+sp def, -Sp Att) gives you (364, 437, 491) which has a bit more sp def (44 ev's worth) than 0 ev, +nature Regice's sp def. Though...