libram and soul fragment packages are not op but overplayed.
3 mana 3/2 deal 3 damage to the entire board is not overpowered?
5 mana 5/5 deal 5 damage not over powered?
0 mana reduce the enemy board to 1 health + give a 1/4 weapon not overpowered?
3 mana 8/8 divine shield heal 8 not overpowered?
That's like complaining the Galakronds are "overpowered" because they give all that stuff at full upgrade.
Almost all your examples above require you to play at least 4-5+ cards before you get that kind of effect for those costs.
And yet, you didn't complain about a 10-mana: Deal 30 damage to the opponent's face....?
Why's that not OP? :-P
because playing the libram / soul fragment activators is very simple and reliable and playing c'thun is very very slow
do you play the game?
Clearly, I do, yes.
I mean, one of your examples is no more likely than getting C'thun to work. To get a 3-mana Libram of Hope, you will need to have discounted it by at least 6 mana. That's a requirement of at least 4 cards to be God-drawn AND played (same as C'thun in fact).
And then you get an effect that can easily be beaten by pretty much any targeted removal which isnt that strong in comparison.
Whereas C'thun deals his damage regardless. My point still stands. In fact, on further reflection thanks to your response, it now makes an even more logical impact to the argument.