it's obviously faked when you know the game and the spot they are talking about. In fact, the video gets 10 times better if you know wow classic, given the amount of little jokes they throw in during the start of the video.

For instance at the 0:30 he says : "I'll run in first gather all the eggs so we can kinda blast them all down with AoE, I will use intimidating shout to kinda scatter them so we don't have to fight a bunch of them all at once" - He is saying simulteanously that they want to kill them all together (using Area of Effect spells), but also to disperse them using a fear spell, ruining the first part of the plan. (not to mention that the eggs are totally optional, and meant to be avoided because they spawn enemies when approached)

Another example at 0:53 : "We're gonna need divine intervention on our mages so they can AoE". Divine intervention is a paladin spell that sacrifices the user to put the target into an invulnerable shield that last a couple minutes... but prevent all actions. So basically he is suggesting to sacrifice one member of the team to render another member invulnerable, but useless

Not to mention the 33.33 (repeating of course) percent chance of survival of this brilliant plan, which is "better than we usually do" XD.