Vial seems fine if you're playing at least 20 creatures, then I think it's just fine.
I read somewhere that the new Sword is pro Green and Black, with the ability of untapping lands if it deals combat damage to a player. Seems good since it means we can lay out more threats in the second main, as that's usually all I want to be doing. Might be an interesting addition for a Stoneforge build.
Also, I did about an hour of playtesting against Merfolk today (U/B with Standstills, Perish, and Plague). I did alright, but the matchup wasn't fantastic. Much of the time if they get going, they just crap out too many guys for me to deal with. I tried playing with Moxen and not (using cards as either Moxen, or what I had them as originally). I know everyone is swearing by Moxes, but they didn't shine for me today, but neither did the slots that replaced them. Most definitely Dark Confidant is amazing in this matchup, as are Swords/Path. Having 6 Swords main was amazing when I drew them. Sometimes, he managed to Standstill twice, nullifying the massive discard I pounded him with early on, or drew double Perish in boarded games.
I tested a split of 2/2 Plague and Dueling Grounds, obviously making note when I wanted one to be the other. The main problem postboard with Dueling Grounds was a Wasteland taking out Maze, or Perish taking out my blockers and Coralhelm beating for 5-6. Not sure what the answer is, but some of the games weren't fun to play. I did like having Pulse, it was useful many, many times. blowing up multiple Coralhelms or Vials was insane, but Vindicate was also very good (albeit fragile to Cursecatcher one time, wasn't paying attention :P) today. I'll be doing 5-6 hours of testing against ONLY Goblins, Merfolk, TES, ANT, and Bant on Saturday morning, so I'll have more to report then. Until then, let's try to brainstorm some more builds/sideboard tech against Tribal, as I believe it to be the weakest matchup, in my opinion.
-Matt

