You can't use an existing keyword and change what it does; you need to use a new keyword.

By the way, banding is unfixable.

This doesn't seem to be changing what banding does. It's just adding an ability that triggers when the creature attacks and banding is made use of.

Banding isn't in NEED of a fix. It's grand.

And yes, this is just "I have banding, AND I improve the band I'm in" which is pretty nifty actually.

It has normal banding (though if I were MaRo I'd remove the "and up to one without" part from the ability to streamline it slightly.

Alex is correct, The second ability triggers whenever it becomes part of a band that has other wolf creatures in it.

I've considered that fix to banding myself, but concluded it's actually a very bad idea. It makes banding useless on attack when you only have a single creature with it out. In order for that modified version to work, it'd have to be extremely dense in the set you brought it back, and it'd make for significantly worse play experience.

Basically, dude1818 is right - banding is unfixable.

Oh I don't disagree. I don't ever expect to see banding return, maybe a new keyword with a similar ability but not banding itself.
That doesn't mean the challenge of trying to fix it isn't a fun one to ponder - which is what these cards were.
I mean who doesn't like the thought of succeeding at something that everyone else has failed to do?

These cards - This, Pack Wolf & Band of Brotherswere me playing around with the unfixable merely for the challenge/mental exercise which is why there are only the three and why they are here in Snap rather than in an actual "set". I wanted to explore the design spaces that banding could allow such as this caring what it was banded with and rewarding the right things and Band of Brothers playing with Squadron Hawk's ability to enable getting lots of banding creatures on the battlefield as quickly as possible.

All that said, I don't plan on revisiting banding any time in the forseeable future.