Its my meta game counter deck so it has garbordor in it. And toybox see you move two damage counter's to the active so it will do more damage. But i think its best to run groudon with darkri ex and prism energy's.
why would you choose groudon over landorus? landorus does a much better job spreading and putting on pressure early game and its second attack does 150 for 3, which with dusknoir, ohkos everything.
Your opponent just needs to play a small bench and your damage output is cut in half while with landorus you have potential donking and guaranteed 60 t1 for 1.