>>57203527ghost types and flying types are immune to horn drill/fissure BECAUSE they're types they're immune to anyways, not the other way around you retard
sheer cold is the ONLY exception to the "every OHKO move has a type they can't hit because regular moves of the OHKO move's type can't hit that type" pattern, and it's for balance reasons
Besides ice already resists itself, and making it immune to itself will not solve any of the type's actual problems
