Battletag: ephraimwaite#2755 Region: EU Trade Only?: Yes, you go first
I need to write this as calmly as possible, as hardcore anti-aggro cards (e.g. Reno etc) have a dedicated fan base with people who don't like the aggro playstyle, BUT:
Defile is undercosted. And not just undercosted, but brutally undercosted.
It'll be in slower Wild Warlock decks forever for precisely that reason. There is no way 2-mana Defile should be allowed back in Standard just because it is a card that requires skill to use effectively.
If we could ask Blizzard to provide the data of every cast of Defile, what would the average real-world amount of damage it does to a board would actually be? Around 3? Around 4? For a cost of 2-mana? There is an argument that some undercosting is OK because it often needs to be played alongside a cheap minion or spell damage minion. There is an argument that some undercosting is OK because that rewards a skillful use of the card. Fine.
But not 2-mana. That is ridiculous. Let's imagine that the lead designer of Hearthstone said his favorite card was a 3-mana Leeroy Jenkins. Time to question his competence?
If you've played Peek To The Past tavern brawl just think about the decks that are good there (Mage and Hunter, Priest a bit worse but gets Cabal Shadow Priest) this time with epics and legendaries. Warlock/s (Zoo too) and Rogue will be good. 4 other classes will be flatly uncompetitive...