so lets say its a 4 player game. each player has at least 1 power cosmic piece. i use skrulljacket to outwit 1 of them do all opposing figs lose it or just the one player's?

Interesting question.......

First instinct would be to say he counters the TA on everyone. Bad luck that other teams, albeit single fig teams, are all using power cosmic. Perhaps 4-player games werent considered, but then again, perhaps they were.

The phrase: counter that team ability on all opposing characters. pretty much sums it up though.

So, I have a question about this one to add, and I'm hoping someone can help me out.

Here's the situation,

Skrull Yellowjacket outwits a copier using the Mystics TA. In response to the Outwit, the copier stops using Mystics and chooses something else. What happens ?

Or, he just outwits a plain old Mystic, and the Mystic turns it off, or whatever game effect they can do to make them not have it. Is the Outwit wasted?? How are all the other opposing figs affected. I have a friend who LOVES Mystic teams, but in the world where we can turn off our TA's in response to an action, I'm wondering how the rest of the board is affected.......

I'll probably be going up against them today...any help is greatly appreciated

Yellowjacket Outwits a TA possessed by the target character. Cancelling does not cause the figure to not possess the TA, so it still goes away.
Also note that he cannot Outwit what a wildcard is copying - he needs to Outwit the wildcard TA itself.

Ahhhh......perfect. Thanks Quebbster. Just so I'm clear, I outwitt the widlcard TA (just because it happens that he is the one I'm targeting) and all others wildcards can't copy. Got it.

Staying with the Mystics example, If I outwit Mystics, do the Wildcard's lose the ability to copy Mystics for that turn? i.e. do all opposing figs lose Mystics if they WERE copying it before it was outwitted??

whoops, i just re-read and i think i answered that last question myself....sorry,,,,and thanks

Well, all the Wildcards of a given type, at least. If you Outwit Deadpool's Spider-man ally TA it has no effect on Taskmaster's Minions of Doom TA.
If you Outwit all the Mystics TAs on the field, then wild cards can no longer use the TA either.

thanks Again Quebbster

Sorry for reviving this post, but with current rules this still happens?
Or if your WildCard copied Mystics before outwiting it, WildCard can continue using Mystics?

It hasn't changed. From the PG:

If the last character on a force possessing a team ability is
KO‘d, or all instances of the team ability are lost,
countered, or otherwise absent, any wild card characters
that are currently using the team ability can continue to use
it until the end of that action. With the start of the next
action, that team ability is not able to be used.