Why onix drop to D rank? Taunt and the ability of outspeed most leads is just 10/10, i would say That onix > carbink, since magic coat is too niche(only a few taunters outspeed onix), and can't rly protect your field from Enemys SR. The extra bulk is quite usefull, but they aren't supposed to stay in the battle more than 3 turns(witch onix can do better, tnks to it's speed tier).