Hi Toni,
The current league is Standard ( post rotation) it was started before the new cards were released but at that time you could play proxies for the cards in the M2010 set i.e lightning bolt from earlier sets gravedigger and teramorphic expanse and unsummon etc. Now you can play Standard with any of the cards in M2010 ( if you have them of course). but cards not reprinted in M2010 aren't allowed but the std filter in deckbiulding should pick those up I hope this clears up the situation.
Regards
Harry