Of course you can make videos and stream the game!
We love seeing fan content and if it's really amazing, we like to share it with our Community channels!
Just make sure it's within the policy here: http://www.futureplaygames.com/fancontentpolicy.html other than that, keep on Battlin' and make sure to share it with everyone and definitely tag us if you're sharing on any of the social platforms where we're present!
To give you some help, we've put together this amazing Creator Starter Pack.
We hope you enjoy your time in the Arena!