Originally Posted by
matunos
I'm skeptical. Against control, SFM can be snared, so if you were on the draw, your opponent can afford the 1. Or, they can StP the SFM next turn and now you're not only set back a land, but left with an Equipment you can't play for another 2 turns at the minimum (assuming you fetched the Batterskull and have another SFM handy). And if you're tapping out on T2 to play your business, you're not able to Stifle their fetches. If they know you're playing Stifle, they're going to fetch when you're tapped out. Finally, in the mirror, by playing the Daze instead of FoW, you've telegraphed that you're probably not holding a FoW, so they can make their move (were it me, I'd assume you still have removal and probably fetch for a Jitte or Sword; and if I get an early Jitte active against you, you're toast).
I also think 2 Jace is probably correct. Or probably no Jaces. RUG Delver doesn't play any Jace because Jace takes 4 mana. If you're relying on Daze for tempo, you're going to reach 4 mana slower than a normal Stoneblade deck (or, more likely, you're going to be holding a lot of Dazes). Other decks with Jace are going to get there first, either because they drew out a Daze from you to put you back a land, or simply because they run 3 Jaces (and often an Elspeth, so there's that too).
Daze and Stifle get progressively worse as the game goes on (and Daze becomes a really ugly Snapcaster target) while real control spells get better, so I'm also skeptical of how great the synergy is with Snapcaster mage. What exactly are you stifling at that point? The opponent's Snapcaster/Vendilion/SFM triggers? I don't think that's enough. I'd rather be flashing back real counters and removal in the late game, like your opponents will be.
You don't have nearly enough cheap threats to keep up with Zoo, Maverick or RUG Delver. Great, you stifled their fetch. You still don't have any threats out, so they're going to develop faster than you will.
In other words, I think control/mirror is going to sit back and out-control you, and I think aggro is going to out-aggro you. I wasn't playing Stoneblade (or Landstill) in the days of Mental Misstep, but the consensus (for what that's worth) seems to be that Stoneblade is not competitive as aggro-control post-MM. If you want a tempo deck, I think you'd be better off dropping the Stoneblade package altogether and playing Delver.
That's just my $0.02, though. If you stick with the list, I'm curious how it works out for you outside the realm of speculation. And if you prove me wrong, maybe I'll try it too. ;-)