Marksmanship

Back: Desperate Temerity - Shadow-Lord Iskar
Chest: Tier - Mannoroth
Feet: Spiked Throatcrusher Boots - Tyrant Velhari
Hands: Eredar Fel-Chain - Archimonde
Head: Tier - Kormrok
Legs: Tier - Gorefiend
Neck: Choker of the Great Betrayer - Archimonde
Ring 1: Maalus - Legendary questline
Ring 2: Portal Key Signet - Xhul'horac
Shoulders: Tier - Xhul'horac
Waist: Torch-Brazed Waistguard - Iron Reaver // Girdle of the Legion General - Fel Lord Zakuun
Weapon: Cursed Demonbone Longbow - Mannoroth
Wrists: Bracers of Fel Empowerment - Mannoroth
Trinket 1: Malicious Censer - Tyrant Velhari
Trinket 2: Talisman of the Master Tracker - Archimonde

Rolls:
1. Archimonde
2. Mannoroth (Arguably #1 as he has our weapon).
3. Xhul'horac / Tyrant Velhari