I think it's okay. But, if you wanted an anti-fatigue measure or an anti-aggro measure, I think it's better to go all in on one of those instead of playing halfway and picking this.
It does give incentive to run doomsayer with this, though. You can have this work as a reusable frost nova effect and still keep it after since they're both start of turn effects. I think that will be the best use of this card.
i think it should've been 3 mana just to fit in some combos at later tages in the game, it reminds me of the timelord cards from yugioh which help when you want to stun an opponent from attacking, overall cool concept poor mana cost for what it intends to do.
Cards that make your opponent skip a turn have turned out to be some of the most op cards in HS history (Ice Block, Time out)
So if what you`re saying is true and this makes your opponent skip a turn, it`s completely insane. Won`t necessarily be the case though since this can be countered by cards like deadly shot/sap/poisonous minions or infinte damage stuff.
Think a lot of people are rating it worse than it is. Love the design and I think the effect has the potential to be pretty strong in the right decks and the right meta.
A lot of people are seeing it as a worse Frost Nova or Time Out, but I think there are several scenarios it might actually be better than those cards. On curve it's pretty much just frost nova (that also effects all potential chargers the opponent has, but together with Doomsayer it's often more reliable than doomsayer/ frost nova is (unless the opponent had 17 attack on board and is willing to "waste" that trading into a 3/10 and killing the doomsayer.
It's also pretty effective at developing minions behind it. Overall I think the card is easily 4/5 stars in terms of power and 5/5 for the concept.