chameleon character

[distant bronze]

special ability is starting the round with invisible until first attack

[rigid thunder]

that does feel a little unbalanced, how about standing still for a few seconds renders the user invisible

or starts the round with the invisible card?

[fleet wren]

Im thinking its like the hidden

where the first shot blows their cover

You can also likely add a thing where if you flash them with flash bomb, it drops their cover/ potentially flash bomb you

So their style of play is more stealth at start before they have to go full agressive.

I'd say to keep things from being chaos. I'd say make it so if they swap weapons. That also blows cover.