This is by far my favorite deck I have brewed up for my channel (Although I only have like 5 videos), [[Berserk]] being added to arena got overshadowed by the likes of [[force of will]], [[daze]], [[Pyretic ritual]] and [[ad nauseum]]. It is a VERY powerful card that I have been really trying to make work in historic. I have a mono green stompy list that has been doing well (I will be making a video with that list soon) but it did not feel like it was maximizing the power of berserk.
Berserk is at its best in infect style decks. Decks that want to win fast by pumping a creature to the moon. The problem is that the good infect creatures are not on arena... so I am playing the next best thing. With Berserk [[heartfire hero]], [[cacophony scamp]] and [[fireblade charger]] act as our infect creatures. In fact, they are even stronger as berserk not only doubles their power but it also destroys them for us, effectively quadrupling their power.
This plays even better than I expected. [[scale up]] alone is enough to win the game, giving this deck a turn 2 combo and a turn 2 kill. [[Callous Sell-Sword]] acts as berserk 5-8. If you played mice standard, you know how powerful this card is with these creatures. It basically allows you to double fling your creature at the opponent. It also opens up more turn 2 kills. Heartfire hero + scale up + sell-sword is 21 damage. Your other 8 creatures deal 18.
This deck is a ton of fun, I highly recommend trying it. Outside of the Berserk, you can get away with very few wildcards for this deck. If you have any questions about the list, please feel free to ask.
Deck List: https://moxfield.com/decks/8K8KH09eME292ey0OPBhXA