>>23547326It'll beat what can counter X or Y and vice-versa so that first turn is going to be hell.
Blobs? STAB Dynamic punch or it better be near full health or else X will kill it
Bulky grounds? Enjoy getting burned or eating a drought fire blast
Dragons like Dragonite? Wouldn't want to risk getting hit by Dragon Claw from X or getting burned
Azumarill or bulky waters like Slowbro? Burned/confused or solar beam from Y
Even after evolving (and one of the enemy's pokemon already got killed or crippled), it's rock neutral with reliable recovery (while praying for confuse hacks) and good speed so it can come in and do work easily. It can even boost. Banned after a week.