>>23593966if it isn't mega, it's still steel/rock so fire blast does neutral damage
if it is, it still has filter anyway
+1 0 SpA Clefable Fire Blast vs. 252 HP / 240 SpD Filter Mega Aggron: 157-186 (45.6 - 54%) -- 45.3% chance to 2HKO
+2 0 SpA Clefable Fire Blast vs. 252 HP / 240 SpD Filter Mega Aggron: 210-247 (61 - 71.8%) -- guaranteed 2HKO