Ive been lookng for informative opinions and breakdowns, but couldnt find one, so i decided to write my own. Maybe somebody will find it useful.
So, Kel'Thuzad is a hyped card that on the first sight comes OP. But suddenly it appears not to be so overwhelming.
First of all, In current meta there are a lot of Midrange and Aggro decks, that dont give you time to establish a board, unless you are a heavy control deck(control priest, control pal, control warrior). So, in current meta KT will most likely sit in you hand and you will have no real chance to play him.
Another issue is that in curent meta there are bunch of decks that have hard removals(Equality, Polymorph, Hex Entomb and so on), so getting rid of Kel'Thuzad won't be such a problem, as it may misseen at the first time. 8 hp is quite a lot, but sometimes not enough.
But let's talk on the positive sides of the Card. It may be powerful in midrange and zoo decks, because if you have at least 2-3 minons on the board, you can drop KT and efficiently trade with other minions for 1 turn. Also reviving will neutralise enemy debuffs from your creatures(like Humility, SIlence and other stuff). So it is like 1 turn Mass Reincarnate for you minions if you manage to kill them with trading. Dont expect Kel'Thuzad to live more than 1 turn. If he does, he overvaluates himself.
Another positive side is combodecks with him. Ones with Warlock, Shaman. Here this card is really powerful, cause you can use him instantly after summoning through some means. But combodecks now are mostly fun decks, and not ladder-viable, cause of swift meta.
Counter to my previous statement, KT can be efficiently played after you baited your opponent's removals and cards for other dangerous stuff. In that case summoning Kel'Thuzad may be a crucious gamechanger. Only in case that you are ahead your opponent or on the same spot. If you are behind, KT wont help you in any way. I played against Kel'Thuzad a lot and only few times i couldnt handle him. Most cases of him being played were countered.
About "OP" synergies like Sludge Belcher, Sunwalker, Stalagg & Feugen, Legendary taunts: A i said before, there are plenty of ways to get rid of a powerful creature, so KT may just not work as you expect him to do. It works "sometimes", but dont expect it to occure frequently.
So, to sum up, I would like to say that Kel'Thuzad is a powerful card if used in specilally created decks. His main drawback is the lack of universality, that persists in other legendaries.For example, Rafaam, Dr.Balanced, Alextrasza or Ysera can be just dropped and instantly realise its value without the reuirement of right conditions. If compare him with Stalagg & Feugen: You can just drop these 2 in your deck and it will be more pressuring, cause your opponent will have to deal with 4/7 and 7/4, and then with 11/11 Thaddius. These boys are great for baiting removals and silences. KT is hard to realise and easy to counter in current meta. So i would not call him an OP legendary due to announced reasons. You can share your own opinion here and discuss things i missed in my "review". Hope my thought s helped you with evaluating of that card.
If you've enjoyed reading this review, follow me in my profile to stay tuned and check out my other observations(Links):
The Expert Set:
Neutral legendaries: Onyxia | Baron Geddon | Malygos | Deathwing | Bloodmage Thalnos | Cairne Bloodhoof | Leeroy Jenkins| Harrison Jones |Sylvanas | Ysera | Ragnaros | Alexstrasza | The Black Knight
Class ones: Al'Akir the Windlord | King Krush | Cenarius | Edwin VanCleef | Archmage Antonidas | Tirion Fordring | Jaraxxus | Prophet Velen[Remastered in 26.10.2016] |Grommash Hellscream
The Whispers of the Old Gods Set:
Neutral legendaries: N'Zoth | Soggoth
Other Sets:
| Kel'Thuzad | Arch-Thief Rafaam |
2
Sickest Card. Love that anim