Starting this Friday, April 22nd, Heroes of the Storm Summer Regionals are going to be a blast. Especially now, as the caster line-up is announced for the event. The event will run for 3 days, finishing on Sunday. Featuring Europe best teams, the event is set to commence in the UK, in ESL Studio. If you plan to attend the event in person, you can buy your tickets here. For those watching at home, here is the official Twitch channel link (contains all the info you need to know).