Rafaam's strength is to turn a bunch of useless cards into something somewhat Viable. In Zoo decks he gives you late game pressure, For some reason some legendaries seem to be common like Zilliax. In a Control V Control matchup he turns your useless removal cards into threats. Rafaam can be slotted into any Warlock deck and fulfill a purpose which makes him a really good craft if you're a warlock player. Personally I crafted him gold because full deck of gold legendaries is awesome.
Rafaam has ANY use only in Control Warrior matchup, where he boosts your chances of victory from 20% into like 30%... Bunch of random legendaries (often overpriced considering pure stats) is never good enough and that's why in most cases you should try to avoid playing Rafaam for any cost. But that means, in most matchups he'll be just dead card in your hand, so why would you keep him in your deck? At some point I've realized, that he's not worth it. It's much more efficient to just concede vs Control Warrior (you would probably lose anyway) and change Rafaam for something more useful in other matchups, like Leeroy.
Rafaam isn't very good in Zoo and for sure he won't work in any future control Warlock archetype, because it's terrible to lose all your control cards and trade them for random legendaries. If you can't beat opponent with your constructed set, then probably you'll lose anyway. I would call him waste of dust, like most Warlock's legendaries at this point... I've crafted him and I regret that.
Have you ever used him or played zoo? It doesn't sound you have.
He's a great card, especially when you start to lose the board or go behind. Zoo can bring people down pretty fast but it can run out of steam if you get cleared and your opponent starts to build the board up.
He gives it a boost and I've found from around 150 or so games that the randomness of the Legendarias isn't as bad as you'd think. He's single handedly won me many games and is great fun. Sometimes having a fun deck that you enjoy is more important to some than a deck that squeezes out an extra 7 or 8% win rate.
I never played zoo because? I've tested Rafaam several times, but after couple matches, when he gave me bunch of heavy and expensive legendaries with no tount, lifesteal or anything useful, I gave up on him. In most scenarios dropping 1 heavy dude (with nothing else but pure stats) per turn, is not good enough. I've also faced Rafaam several times myself (maybe 5 or 6, but that was a while ago, and now I'm not seeing Zoo on the ladder at all) and never lost to him, while I was using homebrewed subpar control-ish Warlock deck. Rafaam most of the time is too slow, too late.
Rafaam's strength is to turn a bunch of useless cards into something somewhat Viable. In Zoo decks he gives you late game pressure, For some reason some legendaries seem to be common like Zilliax. In a Control V Control matchup he turns your useless removal cards into threats. Rafaam can be slotted into any Warlock deck and fulfill a purpose which makes him a really good craft if you're a warlock player. Personally I crafted him gold because full deck of gold legendaries is awesome.
I never played zoo because? I've tested Rafaam several times, but after couple matches, when he gave me bunch of heavy and expensive legendaries with no tount, lifesteal or anything useful, I gave up on him. In most scenarios dropping 1 heavy dude (with nothing else but pure stats) per turn, is not good enough. I've also faced Rafaam several times myself (maybe 5 or 6, but that was a while ago, and now I'm not seeing Zoo on the ladder at all) and never lost to him, while I was using homebrewed subpar control-ish Warlock deck. Rafaam most of the time is too slow, too late.