I actually think it's kind of cool with this
card's stats: that the mightiest of wolves are
almost as powerful as an Inferno Titan. Nature
will claim us all in the end. I also think it's
kind of cool that this card's game text is a
hint of Inferno Titan's power for those who
weren't playing when the aforementioned giant
was around, and/or find him out of budget or
hard to source. It's a creature that nobody
wants to block and you're not quite sure what to
do when you see it coming. Much like a pack of
the mightiest of wolves would be, come to think
of it.
The effect is undoubtedly powerful: you get to
throw a Searing Blaze at an opponent whenever
these dogs block or get blocked, meaning that
they're likely to get through. Since the damage
happens before combat damage goes off, you can
pick off weaker blockers before they can screw
with the dogs, making deathtouch less reliable
as a means to off the wolves. This will
definitely claw Limited rather nicely.
Outside of Limited, though, these wolves are not
great. There's no shortage of removal that can
manhandle these canines, and this is still a
6-drop with merely decent combat stats. Whenever
you're spending 5+ mana on a single spell, you
are ideally spending it on something with an
immediate impact on the board, which these dogs
don't really have. They are excellent blockers,
but leaving your 6-mana creature back as a
blocker is not a game plan that will win you
much of anything.