EDIT: You only gain the grenade recharge bonus with Embrace the Void See subsequent thread here http://www.bungie.net/en/Forum/Post/79723218/0/0 With Embrace the Void you get the Energy Drain effect (a temporary reduction to grenade recharge time) any time you hit an enemy with Nova or any variant of your voidwalker grenades. Do the upgrade modifiers to Energy Drain in its vertical skill tree also apply in this instance as well? I.E. if I have Surge do I get the agility/weapon handling increase on any grenade hit, or if I have Lifesteal/Soulrip do I get those effects if the grenade/nova kills a target outright? More importantly, do multiple Energy Drain effects stack if their durations overlap? Lastly, does anyone know precisely what the increased effectiveness of energy drain effects from Skull of Dire Ahamkara is? Duration, percentage bonuses, etc?