The point of a new expansion is to create new decks. If it does not fit in a current deck, it may fit in a new deck. And some midrange hunters do run nesting roc so hunters can run 5 cost minions in their deck. It may not currently fit in a deck at the moment, however if deathrattle hunter becomes a thing than they would play this card, and we are getting a ton of deathrattles in this expansion.
This card is a bit of nightmare for priests though. 4 attack and its effect can make stuff like savannah highmane cheaper. If it becomes good in the meta, priests will not enjoy seeing this guy.
Unless you casted nourish before or used the warlock hero power, you will also have casted only a single card up until turn 5. Sounds like a solid gameplan.
This scenario is wildly unrealistic since hunter wants to play 1 or 2 cards a turn. Which leaves (if at all) 2 cards to be discounted and not much to use the discount for.
Again, this is not how hunter plays atm and I have my doubt in control hunter.
I'm aware that it's highly unlikely that hunter will have that kind of hand size with the current decks they play, it was an extreme example to show just how powerful that card text is.
As a side note - if hunter ever gets to the point where they have enough quality deathrattles that they can simply curve out (1 card per turn), then playing 2 or 3 cards off the back of Corpse Widow could actually be fairly consistent.
Holy shit, that is busted! Turn 5 play this, followed by every deathrattle minion that costs 2 or less in your hand. Tempo Heaven.
And on top of that it has well-distributed stats, it's a beast, and it fills the 5-slot that has been pretty meh in Hunter until now.
Lastly this works wonder with Stampede, since there are several low-cost minions that are both deathrattles and beasts. Raptor Hatchling, Fiery Bat, Kindly Grandmother, Rat Pack and Infested Wolf. That's not even counting any new cards. 6-ish mana to both fill the board with AoE resistant minions, refill your hand, and put a must-kill minion on the board, really good.
it might as well read "if this stays alive for 1 or more turns win the game" its going to create such and insurmountable tempo lead and you'll find yourself flattened by a huge board of near unkillable creatures in just 1 or 2 turns. right now people look at this card and think its good, but if the meta isn't hyper aggro this could easily become cancer