Hearthstone: It’s possible to search NEW cards in the card collection

There are no particular combinations, it depends entirely on whether your opponents play enough weapons for him to be worth it.

Harrison Jones is a 5/4 minion for 5 mana. You can get a 4/5 Chillwind Yeti for 4 mana, which is probably one of the best plain minions. Compared to that Harrison Jones is not a very good minion if you don't get to trigger his special ability. But a 5/4 for 5 mana is also not terrible.

But I think you're underestimating the value you got in the situations where you played him. Even one card drawn and 1 durability destroyed is a pretty good outcome. You denied your opponent card advantage they might have gotten from using their weapon a second time, and you gained 1 card advantage yourself from drawing a card. That is pretty good already.

The situations where Harrison Jones would be devastating would be enemies that use the following weapons:

• Paladin: Sword of Justice 1/5
• Shaman: Doomhammer 2/8
• Warlock: Lord Jaraxxus 3/8
• Rogue: Assassins Blade 3/4
• Paladin: Light's Justice 1/4

Harrison Jones is a very situational card. It depends entirely on the current meta and the opponents you face whether it makes sense to use him in your deck. In a very weapon-heavy meta he can be very useful, against a weaponless opponents he's a rather expensive and mediocre 5 drop.

No, the tools are too limited.

You have only 5 filter options available:

• the mana gem cost: 0, 1, 2, 3, 4, 5, 6 or 7+
• the search box (finds all cards with the word, so "murloc" finds Hungry Crab)
• the set (more on this later)
• Show Only Golden Cards
• Include Soulbound Cards (shows more cards)

If you want to find cards you can craft which you are not yet able to play, you need to do the following:

1. Set filters to: all mana gems, empty search box, Expert Set, do not Show Only Golden Cards, do not Include Soulbound Cards.
2. examine each card. If you have 0, the card will appear blue. If you have 1, there will not be a x2 tag. There should be a x2 tag on all the non-golden cards unless (a) the card is legendary (you only get one) or (b) you have additional gold versions of the card bringing you to 2 total.
3. Change filter to Promo Set
4. repeat step 2

There is no need to check the Basic Set, Reward Set or the Naxxramas Set as all non-golden cards in these sets are Soulbound (cannot be crafted). Do check the Include Soulbound Cards filter if you are examining these sets.