Essence Font should only be used to get the HoT effect out in order to quickly burst single targets through the double Gust of Mist hits. Cancelling a cast of it when your party has the HoT effect rolling on all of them will allow you to use Mastery-proccing spells faster for burst healing on any target that needs it. However, continuing the channel can be the right call in specific situations, normally when you need group healing while you yourself are moving. It depends on the situation at hand.
The game guide to the World of Warcraft Battle for Azeroth is a handy set of practical advice and guidelines that will help you in getting answers to the most important questions about the new expansion. Battle for Azeroth is the latest expansion set to the much-loved MMO game. Since its launch the game has collected great reviews and everything indicates that Blizzard has delivered another exquisite in-game content for months to come.