Ice Fang on Gliscor would be much better than Aerial Ace or Fire Fang. Aerial Ace is a Flying move, and the only thing it hits are Bug (no Bug Pokemon save Scizor, a Bug/Steel type, is really popular anyways), Grass (Ice Fang does that), and Fighting (who shouldn't even switch onto a Gliscor). Furthermore, Aerial Ace is really poor with 60 BP. Ice Fang hits much more, especially the elusive Dragon types. Finally, Ice Fang and Earthquake are unresisted by almost ANY Pokemon in the entire metagame.
Opt for Toxic or Protect over Rock Slide, which doesn't cover any particular threat. Toxic for damaging opposing walls and putting them on a timer while Protect for additional healing power, and getting hit only every other turn.
Opt for Toxic or Protect over Rock Slide, which doesn't cover any particular threat. Toxic for damaging opposing walls and putting them on a timer while Protect for additional healing power, and getting hit only every other turn.