Dusk Bat

An enemy (combat level 17), found in Mining Cave. It has 340 health, 4 armor and 6 magic resist, and hits for 9.

Each kill gives 408 Mastery XP to the mastery of the weapon you are holding. Everyone who damages it gets the full XP and their own loot roll; party members standing nearby get the XP too. On a Slayer task it also pays Slayer XP — see below.