Siphon Life

Promotion: Shadowlands Epic Edition

Drop: Sister Chelicerae [62]

Zone: Maldraxxus

Approximate Drop Rate: Unknown

Drop: World Drop

Zone: Revendreth

Approximate Drop Rate: Unknown

Vendor: Sean Wilkers

Zone: Eastern Plaguelands

Cost: 2 (unlimited supply)

Pet Battle: [25] Revendreth

Pet Battle: [25] The Maw; [25] Korthia

Vendor: Darahir

Zone: Dalaran (Northrend)

Cost: 40 (unlimited supply)

Drop: Maexxna [??+]

Zone: Naxxramas

Approximate Drop Rate: 1 in 6

Pet Battle: [3-6] Silverpine Forest; [3-6] Bloodmyst Isle; [6-7] Hillsbrad Foothills; [12-13] Eastern Plaguelands

Vendor: Clutchmother Marn'tiq

Zone: City of Threads

Cost: 2250 (limited supply: 1)

Trading Card Game: Worldbreaker

Drop: High Astromancer Solarian [??+]

Zone: Tempest Keep

Approximate Drop Rate: 1 in 11

Pet Store 

Pet Battle: [1-2] Undercity; [1-2] Tirisfal Glades

World Event: Day of the Dead

Quest: The Grateful Dead [1]

Drop: Blindlight [50]

Zone: Nazjatar

Approximate Drop Rate: Unknown

Drop: Nest Egg

Zone: Azj-Kahet

Drop Rate: 1 in 1

Pet Battle: [25] Revendreth

Drop: Mother Shahraz [??+]

Zone: Black Temple

Approximate Drop Rate: 1 in 25

Drop: Court of Harvesters Supplies

Zone: Revendreth

Approximate Drop Rate: Unknown

Pet Battle: [25] Ohn'ahran Plains

Pet Battle: [25] Stormheim

Pet Battle: [23-24] Twilight Highlands

Pet Battle: [20-22] Borean Tundra; [20-22] Howling Fjord; [21-22] Sholazar Basin; [21-22] Grizzly Hills; [22-23] Zul'Drak; [22-23] The Storm Peaks; [22-23] Icecrown; [22-23] Dragonblight; [22-23] Crystalsong Forest

Vendor: World Vendors

Cost: 50 (unlimited supply)