>>18657836Not very, all dark buffs complety skip him, and the addition of Fairy type mean that the likes of Sylveon completey shit on it.
I'd recommend a Calmaron for that special attack, backed up by either a swampert for physical coverage or a gastrodon.
If you are dead set in using Myotismon though, a modest scarf set works well enough
Myotismon @ choice scarf
dry skin
Modest max spatk, max hp, 4 speed
>Giga drain>Dark pulse>Focus blast>Flash cannon 
