Whatever you do, don't dust other classes. This would be a really stupid idea and absolutely ineffective in dust value if you want to build a collection. There will come a time that you get bored of your single competetive deck and you will have no basis in the other classes to build on. Dust bad cards, dust golden cards of which you have the regular ones. Maybe rares can be dusted if you really need the last 100 dust.
But do not dust all cards just because they are in a class you are not playing currently. Especially not good legendaries or epics because thesy will cost you a fortune to get them back.
If there is something you want to have, like Aya or Kun, craft it. You have enough dust to spend it for good cards that improve your deck and having more fun now is a good reason to craft a card. However, spending dust just because you have it is no good reason. Generally keeping the dust is good advice, since the meta will change with the upcoming expansion and so you can easier adjust.
2
Fandral Staghelm does not combine stats, he takes the maximum from the possible forms. This was always the case. See for example Druid of the Claw, the Fandral version is a 4/6 with charge and taunt, not an 8/10.
Also, what Mamizou wrote is not consistent with the (wrong) combine-stats interpretation as it stands - there is no way to reach 4/8 by combining the stats of all 4 cards or of any pair-combinations. He just randomly claimed 2 more health should be added for some arcane reason.
1
Remove Malfurion, he summons beasts. Also, you should add tar creepers, especially if you play Oakheart.
2
People having an opinion when only less than 1/6 of the cards were shown smh. This expansion will have an effect if only because the rotation is very significant, and the community has been shown to underestimate/overestimate cards time and again. Stop frothing at the mouth and at least wait for all the set to be spoiled (though you really should wait for a week or two of gameplay to know how good/bad certain cards are).
Also, basing your opinion on Twitch chat reactions is UNWISE.
0
Got Woecleaver. I'm happy :)
2
This has got to be a troll.
1
3
The wording is never Battlecry: X, it's Battlecry: gain X. The problem is that without stating it, the minion gains rush but keeps the charge ability, resulting in downright contradiction. You can't have such ambiguity.
It's also just very weird to tie a keyword like rush into a battlecry.
1
6
Velen was never viable in standard up until Razakus. It's an unplayable card in non-combo decks and considering the fact Raza rotates out, there's no reason to touch it.
4
If you are indeed a Mage enthusiast you should definitely craft Jaina. She's a staple in control and just generally a fun card.