Ah, ok. As long as you have a Poison Heal Gliscor, it's all good. Otherwise, Hypercutter Gliscor is probably ok, but in that case, you'd want sub/roost instead of protect/sub... I doubt it will be as effective though. ... Roost would require previous Gens if you do not have BW2 move tutor though unfortunately. But yes, Substitute is a TM in BW1.