Unholy Bond

Corpse Incarnate Marut. The Necromancer Boss on its own was weak, probably the weakest Tier 3 Samar had encountered thus far. 

The Necromancer had just 50,000 HP, less than even a Miniboss'. Its defense was okay for a Tier 3 but its strongest point was its attack power. However, it had no skills to take advantage of it! 

The Raise Dead skill could summon Undead forces to fight for him but Samar doubted they would be more powerful than the mobs in the Dungeon. 

Death Rot Curse was an attack type skill so to speak but even this skill was a DoT skill. The last skill, Complete Incarnation, seemed overpowered which could boost the Necromancer's Tier to one stage higher but he doubted the Boss could activate it at will. 

In a nutshell, Marut had no skill that could threaten Samar's immediate safety. This was the reason he dared to confront the Tier 3 Boss alone.