Conjuring Oni

An enemy (combat level 80), found in Fire Forge, The Cinder Deeps. It has 2,400 health, 70 armor and 36 magic resist, and hits for 68.

Each kill gives 10,800 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.