If I use Omastar's Power to devolve all Pokemon does this count Magmar and Electabuzz evolved by the powers of elekid and magby....and also....When I devolve does the LV.X go with it or does it count as a evolution card itself?
The Level Up card goes wherever the highest stage Evolution card goes. In Omastar's case, it gets sent to the opponent's hand, so both cards go to their hand.
But if it's a Level Up card on top of a Basic Pokemon, nothing happens to it, as that's not an Evolved Pokemon. Leveling up is not evolving.