The best place to farm Large Blue Sack is Darkshore, where Deep Sea Threshadon (level 23-25) drops it at 0.4%. That is the vanilla 1.12 chance, not yet confirmed in Forever. 466 sources are ranked below by drop chance.
Best zones:
| Zone | Sources | Best source | Level | Drop% |
|---|---|---|---|---|
| Stonetalon Mountains | 42 | Brother Ravenoak | 29+ | 2.7% |
| Ashenvale | 70 | Akkrilus | 26 | 1.3% |
| Hillsbrad Foothills | 39 | Big Samras | 27 | 0.7% |
| Unknown zone | 9 | Aku'mai Servant | 26+ | 0.6% |
| The Barrens | 26 | Swiftmane | 21+ | 0.5% |
| Westfall | 2 | Battered Chest | 0.5% | |
| Darkshore | 8 | Battered Chest | 0.5% | |
| Wetlands | 52 | Solid Chest | 0.5% | |
| Duskwood | 35 | Solid Chest | 0.5% | |
| Alterac Mountains | 5 | Solid Chest | 0.5% | |
| The Stockade | 9 | Large Iron Bound Chest | 0.5% | |
| Silverpine Forest | 4 | Alliance Chest | 0.5% | |
| Gnomeregan | 17 | Large Iron Bound Chest | 0.5% | |
| Razorfen Downs | 2 | Large Iron Bound Chest | 0.5% | |
| Scarlet Monastery | 4 | Large Iron Bound Chest | 0.5% |

- Brother Ravenoak 28.0, 12.2
- Taskmaster Whipfang 62.7, 55.2
- Gatekeeper Kordurus 29.3, 16.0
- Cenarion Druid 28.3, 13.6
- Blackened Ancient 30.9, 64.7
- Mirkfallon Dryad 27.3, 12.8
- Corrosive Sap Beast 33.4, 18.1
- Wily Fey Dragon 33.1, 13.2
All sources, by drop chance:
Drop% is the rate recorded in Forever once a source has been looted ten times; a greyed figure is the vanilla 1.12 chance from the world data (vanilla reference — from the 1.12 world data, not yet confirmed in forever). Spawns counts the source's spawn points in the world data. "Side" names which side can kill the NPC when the other finds it friendly. The lead picks the best chance among sources that are not a rare spawn and have at least three spawn points.