I really wanted that summon emote but as I understand it I had to watch the livestream in order to get it. Unfortunately, I had to work during the stream so I missed it. It feels unfair and punishing to people with day jobs.
If you missed the emote through Twitch Drops during the Global Reveal, you can watch any of the international recap streams (schedule is here) or even ESO Live this afternoon at 4pm ET for another chance to earn it.