How do you play Impending Doom this league in Crucible?

Character Level 100 Pathfinder Bandit: Kill all Pantheon: Lunaris, Ralakesh
Pools 5,325 Life 260 Energy Shield 1,274 Mana
Defences 1,408 Armour 2,641 Evasion 77,066 effective HP
Resistances 76% Fire 66% Cold 76% Lightning 59% Chaos
Full DPS 35.4M as set up in the creator's PoB
Weapon 1 Crafted Item Maelstrom Staff
Helmet Pig-Faced Bascinet
Body Armour Lightning Coil Desert Brigandine
Gloves Vixen's Entrapment Embroidered Gloves
Boots Dragonscale Boots
Amulet Apocalypse Collar Gold Amulet
Ring 1 Iolite Ring
Ring 2 Iolite Ring
Belt Glyph Lock Heavy Belt
Flask 1 Flagellant's Quicksilver Flask of the Cheetah
Flask 2 Flagellant's Ruby Flask of the Kakapo
Flask 3 Flagellant's Topaz Flask of the Horsefly
Flask 4 Taste of Hate Sapphire Flask
Flask 5 Quartz Flask
Cobalt Jewel
Medium Cluster Jewel
Watcher's Eye Prismatic Jewel
Large Cluster Jewel
Cobalt Jewel
Cobalt Jewel
Cobalt Jewel
Medium Cluster Jewel
Weapon 1 Impending Doom 22/20 Despair 20/20 Awakened Unbound Ailments 5/20 Awakened Spell Cascade 5/20 Void Manipulation 20/20 Awakened Deadly Ailments 5/20
Body Armour Purity of Elements 20/20 Herald of Agony 20/20 Haste 20
Weapon 2 Vitality 20 Flame Dash 20
Gloves Spell Cascade 20 Enfeeble 20/20 Temporal Chains 20/20
Boots Steelskin 17/20 Cast when Damage Taken 13/20
Boots Withering Step 20/20 Enhance 3
Helmet Inspiration 20 Divine Blessing 20 Increased Duration 20/20 Malevolence 20/20