Jund: This seems about 50/50 (which is probably one of Junds greatest strengths) but if you can keep their big threats off the board and land your own you should be fine. The discard engine should be very powerful in keeping them from locking you out of the game.
Affinity: This also seems about 50/50, remove and discard their threats and you should have a decent time of it. Kolaghan's Command and multiple wraths should be good here.
Tron: As with other midrange decks probably our worst matchup. If you remove all of their threats and discard their planeswalkers you should have a decent chance.
Infect: This one seems like a very good matchup. As an extremely fast combo deck we don't stand much chance if they get the nut draw. Keep hands with removal and a turn 1 Thoughtseize or Inquisition of Kozilek should be crippling.
Burn: This Matchup seems difficult as there isn't much lifegain in black and red. I think that if you shock yourself minimally and kill their creatures you should be in decent shape. Discard is perfect here and it slows them down a lot.
Merfolk: This matchup seems very easy. We have many removal spells for their lords and multiple wraths to deal with their horde.
Jeskai Nahiri: This seems difficult as their Nahiri clock is quite quick and we can't do much about it. The best way to go about it would be targeted discard to scrap Nahiri and sticking a early thing to put a clock on them.
Ad Nauseam: A decent matchup as our hand attack can easily take out their combo pieces until they are in topdeck mode. We are favoured once we get a creature and take their hand away.
Delver: We should be good with this matchup as our high amounts of removal can kill Delver of Secrets
and our targeted discard can get rid of their counters and threats so that we can stick our own.
Zoo: We are favoured in this matchup as we have many removal spells and board wipes. Once we get out a creature it should be bigger than theirs in which case we can block until we get another (turns out blocking with Phyrexian Obliterator is pretty good.)