Two: Flamestrike
Flamestrike is the bane of arena players everywhere. Everyone knows at this point that you can’t play minions on your turn six against Mage. Flamestrike can easily turn a game with three, four, or even five for one value. If you are able to get a second Flamestrike, even better as they won’t predict it. Flamestrike is difficult to play around, because you can’t bait it without losing everything you bait it with. Flamestrike is particularly strong at the moment, as many people are going for faster decks. This means fewer minions with high health, so Flamestrike will clear them all.
The only downside to Flamestrike is its cost, which is quite high. However, the value is more than worth it, and any Mage deck will want Flamestrike for sure. In fact, it almost won our number one spot, but lost on a technicality.
