The Dark Potion can be drank by Miners, the Lumberjack, and Bob the Farmer. You can use one for each at the same time. With the Potion Stacker Donor perk, you can use 2 of them for each.

If you activate it onto the Miners, any diamonds mined by them will become a Dark Diamond.

When activated onto the Lumberjack, you will be able to get Dark Strange Leaves when chopping down trees.

Bob have a rare chance to find Dark Mushroom Seeds and Dark Leaf Seeds when given Dark Potion.

You will need level 100 of their respective skills (Mining, Woodcutting, Farming) to be able to use the potion.

Bugs Edit

The Dark Potion description says it is brewable from level 70, but when you click it, it says it is craftable from level 75..

Potions OxygenPotion
Small Vial: Stardust Potion - Tree Potion - Seed Potion - Smelting Potion - Oil Potion - Bar Potion - Super Stardust Potion - Woodcutting Speed Potion - Combat Cooldown Potion - Farming Speed Potion

Large Vial: Stargem Potion - Blue Pirate Potion - Mana Potion - Super Oil Potion - Greater Stardust Potion - Stardust Crystal Potion - Super Tree Potion - Super Combat Cooldown Potion - Green Pirate Potion - Sick Cure Potion

Huge Vial: Super Compost Potion - Super Mana Potion - Oxygen Potion - Reproduction Potion - Dark Potion - Red Pirate Potion - Critical Strike Potion - Ultra Stardust Potion - Loot Bag Potion - Anti Dragon Fire Potion