M6 Cluster Arrow build for pushing grifts -
http://www.diablofans.com/builds/69831-2-4-gr-75-85-cluster-marauder althought, I would replace Visage of Gunes with Cloak of Garwulf
UE Multishot for speed rifts -
http://www.diablofans.com/builds/69830-2-4-fastest-torment-10-build-ue-fire. When doing speed grifts, replace goldwrap with witching hour and avarice band for CoE
LoN stafe/fan of knives build for pushing grifts as well.
LoN rings, Hellfire Ammy, Visage of Gunes, Mantle of Channeling, Aquila Curiass/Beckon Sail, tgods, Hexing Pants, boots can be Illusory/Irontoe Mudsputters/Ice Climbers, Wraps of Clarity, St. Archew's Gage, Dawn and Fortress Ballista for weps, Lord Greenstone's Fan and CoE in cube. Armor slot is either Aquila/Beckon Sail/Leoric's
Evasive Fire(Hardened or Focus rune), Strafe(Drifting Shadow), Fan of Knives(Pinpoint Accuracy), Smoke Screen(Displacement), Preparation(Focused Mind), Vengeance(Seethe)
Cull The Weak, Ambush, Archery, Single Out, Awareness for passives, using one as your fifth on hellfire
Group enemies, and use Fan of Knives when CoE is on lightning rotation