I already thought about such a card, but my version would have been 4 mana: "destroy all minions and replace them with random Murlocs". Having that as a transform effect is huge. It's even better than Devolve against large minions.
Random Murlocs are still a bit tricky though, since your opponent could potentially end up with a very scary board, if a Murloc Warleader or two are in there. But about a third of all murlocs is cheap and weak. In the better cases for you, this is a 3 mana Mass Polymorph. That doesn't immediately save you, but can save you a LOT of trouble. And just 3 mana... wow!
Also, it can be used offensively, since random Murlocs are likely better than your little Totems or weaker tokens on the board. If you are playing a token deck, you might use it both to upgrade your board and downgrade your opponent's, if only to get rid of big taunts.
Not gonna say Control Shaman will end Big Priest, and in Standard, you still have to deal with Warrior, but this is extremely improving your chances against Mage and Mech decks alike. A super exciting card, and I hope it will show up in one (better two) of my packs.
Yeah, I think this card is crazy good, but not sure about Meta defining yet.
This is a good late game tool for sure. The problem with this card is that against an aggro deck, this card may improve their board state.
And you will not be able to attack with any murlocs you get transformed, so this is a huge tempo loss if you are behind on the board. And if you are ahead on the board, you do NOT want to play this, normally.
Against certain decks, though, usually non-aggro, this card is absolutely amazing.
Perfect card to wreck resurrection pool in wild, not just for Priest but Warlocks demons too. If you are desperate to stabilise and don't want to get hit with face damage you can combo this with Earthquake, and maybe heal up with Witch's Brew next turn or something.
Edit: Admin please fix that it is a one choice poll, not multiple.
I am really pissed that Rogue's Plague of Madness is the only one that so far is thematically incorrect with the whole Plague "mechanic". Waiting on Warrior "Plague of Madness" to transform all into Boom Botfor a clown fiesta.
This is probably the best card to deal with any mana cheating interaction, especially vs. Mage (say bye to a wall of Mountain Giant). And if you come up against Aggro or board-centric Tempo decks you'll have plenty of other options to deal with those (Thunderhead + X, Lightning Storm, Hagatha's Scheme) before you cast this spell. Not to mention poor ol' Priest. I really like this card!
I am really pissed that Rogue's Plague of Death is the only one that so far is thematically incorrect with the whole Plague "mechanic". Waiting on Warrior "Plague of Madness" to transform all into Boom Botfor a clown fiesta.
Better to be pissed off than pissed on. And it's just better not to be pissed about silly video games in general. Let the hate flow!