Ok typing in the dark doesn't work so well. Hopefully this isn't a double post.
Gowen can easily put Lawtia in its place in this format. The trick is to keep running out more level 2 cards (Magic Dual Sword Wielder if you can fit her in) as fast as possible.
You want to force your opponent to waste SP reviving the Lycanthropes with their Auto skill as well as between rounds when your Soul Cards trigger and you kill off Eskatia before his Start skill activates. That is the key by the way. Clear the board in these rounds, time your soul cards with what you're going to play in the round they activate. Salamanders are your best friend.
Open Katrina w/3 into Gowen. If Lawtia opens Shade then you counter in round 2 with either Monk or the non-starter level 2 that has 2 range/2 agility/60hp/30 att. Save your Brave Soldiers and Panther Souls for later since your opponent will most likely expect you to kill off the Shade placed in the front row triggering their first Soul Card which will be a targeting type of damage dealer most likely.
The Monks are your safest risk/reward play early on in round 2 or 3. I prefer Monk over the other card since Agility is your best friend. Summon Salamanders between odd rounds where you can't summon what you are saving up for and take out anything you can with 10hp left or reduce a 50hp or 30hp card in the front row to make it easier for Katrina and/or Monk to kill them off.
Place Salamanders in the front row so they get attacked instead of your level 2's. DO NOT REVIVE THEM! (only revive when you already have field control and aren't worried about clearing your opponents side in the next turn or so). They have more value to you dead than alive early on (that is if you have the right Soul Cards in place).
Field control is the key to this game and is how every deck wins besides the cheesy life regenerators or Killing Machine buffed units. In this tournament it is less likely that your match will devolve into this if you put one DISPEL into your card file for safe keeping.
If you're playing against Lawtia with Lawtia you don't even need to bother killing Eskatia off. He helps your cards as much as theirs. Summon your own Night time heroes like the Lycanthropes, Moonlight Warrior, & Castle Wight's.
Good luck. If you want more of an explanation on anything just ask. There are better players than myself that play and most of what I've learned is from watching what they do to beat me then assimilating that into my own style. I tweak what they use to my own ends. You should do the same. A nice combo you see is something you should think about using yourself. Always consider the timing of things and how they fit into your own deck at the same time. Is there a better way of using card combo's? What could my opponent have done better to beat me? If you think along these lines you'll be one step ahead and will beat them to the punch.