Why would a Voidwalker get a nickname just for being in a group with a Song of Flame Sunsinger? Lol, it's not like you can actually build around this unless you ensure having a teammate do it FOR you. What you can do however is run high Disc with Nothing Manacles, The Hunger, and Embrace the Void for still very fast grenade recovery, assuming you make sure to work your melee periodically as well to chain Energy Drain proc's.