A Death Knight 5e is both a brutal warrior and a potent spellcaster. Its most devastating spell, Hellfire Orb, unleashes a fiery explosion, wiping out foes in an instant. Beyond this, it can cast spells like Destructive Wave and Staggering Smite to inflict massive damage and control the battlefield. Additionally, its ability to command undead and resist magic makes it nearly indestructible in battle.