This is one of my current builds for FJP (ixtun) Midrange. I've been very happy with most of the cards, so I'll give you a quick rundown of my key card choices. Then I'll address some of the points that I'm not so high on, and what could be done to fix those.
- Defiance
Defiance is the only real answer to amaran stinger. That alone makes it worth including. It's also a great answer to any aggro deck, as well as merchants. However, it's a reactive removal spell as opposed to a proactive one. This means that you can't respond to something like Palace's buff by killing the unit, which is a large downside. I think 3-of is a good spot, given the wealth of anti-aggro removal this deck already has.
- Strategize
With all the fate cards we play strategize is essentially a 2-cost wisdom of the elders. Always play 4 copies.
- Smugglers
These are the best smugglers in the game, so definitely play 4 of each.
- Vargo
Vargo is a great combo with harsh rule, and is just a good unit in general. He's not on the level of Vara or SST, but he's good enough for our purposes.
- Harsh Rule
Amazing combo with Vargo, just a good card in general for catching us back up.
- Jotun Hurler
Good anti-aggro, pops aegis, card advantage with strat/smugglers. What's there not to like?
- WWH
A good 5-drop, which is something these xo midrange decks tend to lack. Also has the potential to just "oops, I win" with the market scattershot
- Howling Peak vs Korovyat Palace
Howling peak has mirror image, palace has withstand. Peak has kaleb's choice, palace has wisdom. But where peak has gun down, arguably the most important spell in its repertoire, Palace has garbage. Palace is a good card, and has utility for punishing permafrost and just beating down, but peak is the better maindeck card by far.
- Xo
Never less than 4 xo.
Strengths:
- Near-infinite value, similar to FTP
- Harsh Rule to reset the board
- "oops, I win" combo of WWH + Scattershot
- Decent answers to Amaran Stinger
- Great against aggro
Weaknesses:
- peak is a clunky card
- vargo is not the greatest 4-drop, herald is not the greatest 5-drop
- can get overwhelmed by fatties if you don't find removal in time