EastScape Wikibuilt from the game itself

Penumbra page

“Spends one per cast. Adds 33 to what lands. No element: nothing is weak to it and nothing resists it.”

How to make it

MaterialsSkillWhereMakesXP
10 × Spell paper
2 × Arcane ink
Umbral ember
5 × Void morel		Wizardry 110a workbench10176

What it does

Ammunition (Magic 110): adds 170 to your max hit, as arcane. One goes with every shot; a pouch holds up to 1,000.

Needs Magic 110 to use.