Enhanced Ember Tap

Enhanced Ember Tap is a Destruction warlock Draenor Perk, available as early as level 92, though it is not guaranteed to be acquired until level 98.

Enhanced Ember Tap is the only way for Destruction warlocks to reliably on-demand heal your pets as Destruction does not have access to Health Funnel. This ability is most useful while soloing when your pet is likely to take significant damage. It is unlikely to be of much importance in raid settings, however, because pets take insignificant damage from AoEs, raid-wide effects and environmental damage and you should not be using a Voidwalker in raids, so there would be no physical damage either.