Bat wing

Bat wings are dropped by bats which appear at night in few outside areas as well as inside the dungeon. Bat wings can be used to craft pigskin paper or for alchemy.

Alchemy
Bat wings can be decomposed to powder and solution with the alchemy mill and hand mixer, respectively. Having unlocked Master of Alchemy produces one additional reagent at any workstation.

Крыло летучей мыши