Marrow Knight

An enemy (combat level 380). It has 3,200 health, 70 armor and 35 magic resist, and hits for 140.

Each kill gives 14,400 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.

It does not respawn once killed.