It is the Lingering Souls of pauper
While it's possible for Storm to win through something like Leyline of the Void or Rest in Peace, it requires a lot more work, since Past in Flames can't double the storm count, mana, and cantrips, which often leaves Storm in a position where they have to try to Remand Grapeshot once or twice to actually win or attempt to win the game with Empty the Warrens
It depends on how well they're trained
Takenuma, Abandoned Mire is the best of the three for this deck, since it mills three and then returns a dork to your hand from the 'yard
2005 Sets : Darksteel , Fifth Dawn , Champions of Kamigawa , and Unhinged My Pick : He Who Hungers ( Champions of Kamigawa ) With Onslaught showing the popularity of typal themes, R&D started improving on typal
DUNE THE TOWN Glacier Godmaw might seem unassuming, but a mini overrun effect that isnt the typical Craterhoof et al can be perfect for a slower environment