Hmmm, what did I notice in my encounters...Heroic Slitherspear: one shot on my second attempt, first attempt with a RenoLock deck. You get some good minions out cheap, some taunts, access to Shadowflame which is amazing in this (combined with a Giant or similar), and of course Reno (which did save my life).Heroic Giantfin: two-shot with an AoE priest deck (refined after the first - including a wincon of Velen + burst, but opted to just fatigue him down instead). When he had about 10 cards left in deck he just stopped playing things entirely - I believe this is because I had Geddon out, and can only imagine his hand wouldn't allow any/enough murlocs to have 3+ health. At that point, fatigue was off the table and I just smashed his face with Geddon. The deck was pretty much entirely AoE, and the key point to that is that you have to evaluate when you can afford to take a turn of face damage (and hope for no crazy chargers or buffs) in order to make your AoE last longer. I ended up on 7 health in mine (and that's healing myself every turn while Geddon burnt me).Heroic Nazjar: also used a druid deck. Living Roots is very solid as it gives you two one drops, so matches her Mirror Entity play. Winning cards in the deck though were Volcanic Drake (often costs 4 or less but transforms into a 6 drop) and Volcanic Lumberer (again, often costs 7 but transforms into some pretty powerful 9 drops). Key note though: Sea Giant was a total bombo. Every time it went to transform, it failed - but worse, it didn't transform into itself (as I thought it might) and fully heal; it remained unchanged.Given that there are legal targets for it to hit besides itself (Frost Giant, Varian, Deathwing) I can only assume that it's one of three things:1. It's a straight up bug.2. In my case, I continuously got unlucky and had it try to transform into Sea Giant - and if it tries to transform into itself it remains unchanged.3. Due to how the normal mode ability works (as well as Nazjars side of the heroic), the game needs to be able to have a minion at +1 cost to transform it into - and if it doesn't, it remains unchanged.I feel like it's 3 (which may also make it 1). But in any case: Sea Giant is a bombo. It may be an efficient minion thanks to its cost reduction, but every other big minion you play will more or less heal itself at the end of the turn.Oh, and while I didn't have to use it in my encounter, Poison Seeds seems pretty good as an equalizer. The treant tokens are 1 cost, meaning its fairly likely that most of the upgraded minions after Nazjars turn will have 2 health and thus be tradable. Of course, if you manage to Poison Seeds then Starfall, Bob's you're uncle. ^^
It seems that can prevent Giantfin Heroic from playing his weak murlocs at all."Sturdy" things like Old Murk-Eye may still come, but you won't get flooded easily.The "worst" case will mill the boss.
lord slitherspear has 3 slithring guards in his deck, thats the card you are missng
Giantfin has 1 "anyfin can happen" in his deck
I found Slitherspear pretty much impossible with every deck I tried until I net-decked and realised that all his minions are buffed and can be silenced. A Priest deck full of silences gave me the win in no time. Could have kicked myself!I went priest again for Giantfin (along the same lines but this time my own deck with a couple of anti-murloc cards): I didn't even need a custom deck for Lady Naz'Jar, I just went with my old staple Feign Death Hunter deck: I use it for fun sometimes on ladder but it also seems to be very good at beating adventure heroes! This is the first time it's beaten a heroic hero, though.It's worth pointing out that Lady Naz'Jar's hero power does not trigger deathrattles (I guess it's a transform effect) but, even so, the survivability of death rattle minions makes it easier to trade favourably giving you more board presence which, for this fight, is essential.If I were designing the deck specifically for Naz'Jar I would have changed a few things but since it won two out of the three games I played against her I figured I didn't need to tweak much!