I don't know what exists in this niche but have you considered some kind of speech system that you can pre-program with phrases? As others have said here, a fireteam might not want you because it would seriously hamper their progress because you're unable to communicate the things they need to know, but ... it seems that if you could have something generate the necessary commands/replies for you it wouldn't really matter that you can't use a voice of your own. I am thinking of something along the line of a soundboard, there's plenty of such things for the iPad or other tables, so here's the setup I could see working: 1. A table containing a soundboard app, with prerecorded messages. I would definitely consider recording a message telling your fellow teammates about your handicap to let them know that you probably can't answer general questions other than through the preprogrammed responses. Obviously you could add a voice synthesizer into the mix that you could type replies into to be able to do that but it would complicate matters. 2. If you're on Xbox One, I would get the stereo headset adapter for the controller, and a splitter so that you can plug the one minijack cable from the adapter in the controller into a headset, and into a cable that you would stretch to the tablet. In-game you would use the screen of the table to communicate, this would "speak" the preprogrammed recording, piping it into the controller as though it was a microphone. I agree that you being mute should not be a reason for denying you a chance to play raids, but you *do* have a handicap, but there could be ways to circumvent that. Best of luck whatever you choose though.