Hearthpwn

I hate this card!

Playing this Turn 1 just to trip up players using Questlines.

1 mana Counterspell that's situationally even better. Who thought this was a good idea?

The only spell that ruins quests on the first turn. Because of this, it should be nerfed.

Weird interaction with Flare. Opponent had this in play, their only secret, I play Flare, and it cast a random hunter secret. I'm not sure but I think I drew a card from the flare, and since it was the only secret in play I can't say whether or not it dispels all other secrets except Oh My Yogg!. Need to test this more. My theory right now is both card's effects were triggered. 

Can confirm. Weird interaction with Choose One cards as well. I was going against a mage and their Firelands Portal turned into Wisps of the Old Gods and somehow managed to trigger both parts of the new card at the same time...twice.

So naturally I died to a full board of 5/5 Wisps along with the Reno they played earlier. Very cool Blizzard.

Shadowjeweler Hanar loves this! 

I had a game where my opponent was going to throw by casting DOOM! on a 10-minion board, which was changed to Survival of the Fittest

I have even have proof, (Turn 16) https://hsreplay.net/replay/C9UAsVmEi3cpiYwPadfEtc

Will the coin trigger it?

There are 0 mana spells, so I'm assuming yes. 

I can confirm that The Coin triggers it. For me, it turned into Shadowstep.

Best Card of the set by far. 
its basically 1 mana Counter spell 

WHAT THE YOGG!? I LOVE IT!

Favorite. Card. This. Expansion! I could see this backfiring for both of us so much, and I cannot wait for shenanigans when a key combo starting spell gets transformed.

Is this the Yogg-Saron artifact spell they were hyping up? Like with Mask of C'Thun and Jewel of N'Zoth. If not, then where is it? If so, this is kinda sad compared to them

I think that the Yogg-Saron artifact is Puzzle Box of Yogg-Saron and they just had no incentive to print another card like it. 

I figured yeah, but they could've done something like "6 Mana, Cast a random 5 cost spell and add a 5 cost spell to your hand"

Card that surely will trigger this most of times (if not the most) will be, obviously, The Coin. Let's see, what spells cost 0 mana in Wild?

Ancestral Healing, Backstab, Innervate, Moonfire, Power Word: Shield, Sacrificial Pact, Totemic Might, Beakered Lightning, Blur, Circle of Healing, Elemental Evocation, First Day of School, Freezing Potion, Inner Rage, Lightning Bloom, Mutate, Pounce, Raise Dead, Regenerate, Shadowstep, Silence, Topsy Turvy, Totemic Surge, Whispers of EVIL, Zap!, Counterfeit Coin, Forbidden Ritual, Forbidden Words, Embiggen, Forbidden Flame, Forbidden Healing, Forbidden Shaping, Lazul's Scheme, Preparation

Imagine all shenanigans and bamboozles caused by The Coin...

really good for secret rogue because it helps you maybe mitigate board clears