RE: Any idea for Dusknoir(Flashfire) Deck?
This card suffers the same affliction as Fliptini. The more I read it, more worst the card gets. Not saying it a bad card, just not as good as you think at first glance.
Either way that Dusknoir actually makes any deck that currently uses dusknoir, much more interesting. With teching just 1 Flashfire Dusknoir into those decks. You instantly get the ability to manipulate both your opponent's and your pokemons damage counters.
A few decks that come to mind are Seismic Punch Seismitoad (reducing the need to have Mr Mime out asap), or Gourgeist (if somehow Gourgeist survives after taking its opponent to 10 hp or knocking it out, you then have 90 damage to fling at your opponent using dusknoir while completely healing Gourgeist). It also can help decks that utilize max potion, use them much more efficiently. Though if they are using max potion already, they probably dont have room for a dusknoir line.
The only problem with this pokemon is that it doesnt remove the damage counters, and it only hits/heals for a max of 120.