Legendary Resistance (5/Day). If Artus fails a saving throw, he can choose to succeed instead.
Magic Resistance. Artus has advantage on saving throws against spells and other magical effects.
Marshal Undead. Unless Artus is incapacitated, he and Undead creatures of his choice within 60 feet of him are immune to features that turn Undead.
Unusual Nature. Artus doesn’t require air, food, drink, or sleep.
Multiattack. Artus makes three Cruel Revenge attacks.
Cruel Revenge. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 10 (1d8 + 6) bludgeoning damage plus 18 (4d8) necrotic damage, and if the target is a creature, it can’t regain hit points until the start of Artus' next turn.
Cataclysmic Fire (1/Day). Artus hurls a magical ball of fire that explodes at a point he can see within 120 feet of himself. Each creature in a 20-foot-radius sphere centered on that point must make a DC 19 Dexterity saving throw. A creature takes 35 (10d6) fire damage and 35 (10d6) necrotic damage on a failed save, or half as much damage on a successful one.
Additionally, any Medium or smaller Humanoid killed by this damage, as well as every corpse of such a creature within the sphere, becomes a skeletal knight (see the Dragonlance: Shadow of the Dragon Queen) under Artus’ control. The skeletal knight acts on Artus' initiative but immediately after his turn. Absent any other command, the skeletal knight tries to kill any non-Undead creature it encounters.
Spellcasting. Artus casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 19):
At will: detect thoughts , command (cast at 3rd level)
2/day each: dimension door, dispel magic, hold person, detect thoughts, nondetection
1/day each: gravity fissure, scrying (as an action)
Word of Death (1/Day). Artus points at a creature he can see within 60 feet of himself and magically commands it to die. The target must make a DC 19 Constitution saving throw, taking 100 necrotic damage on a failed save, or half as much damage on a successful one. If this damage reduces the target to 0 hit points, the target dies.
Parry. The death knight adds 6 to its AC against one melee attack that would hit it. To do so, the death knight must see the attacker and be wielding a melee weapon.
Artus can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature’s turn. Artus regains spent legendary actions at the start of his turn.
Implacable Maneuver. Artus moves up to his speed or commands a mount he is riding to move up to its speed. The movement from this action doesn’t provoke opportunity attacks. If he or his mount moves within 5 feet of a creature during this movement, he can force the creature to make a DC 20 Strength saving throw. The creature is knocked prone unless it succeeds on the saving throw.
Strike (Costs 2 Actions). Artus makes one Cruel Revenge attack.
Cast a Spell (Costs 3 Actions). Artus uses Spellcasting.
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