Legendary Resistance (3/day). If the Abyss Watcher fails a saving throw, it can choose to succeed instead.

Lord of Cinder (Mythic Trait; Recharges after a Short or Long Rest). If the Abyss Watcher is reduced to 0 hit points, it doesn't die or fall unconscious. Instead all summoned legion members die and their fiery blood is drawn into the Abyss Watcher and it regains 114 hit points. In addition, its greatsword attack now deals an extra 5 (1d8) fire damage, and it can no longer use the Farron's Legion ability.

Multiattack. The Abyss Watcher makes three melee attacks.

Greatsword. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 14 (2d8 + 5) slashing damage.

Farron's Legion (Recharge 5-6). The Abyss Watcher calls forth a member of it's legion. A legion member has statistics like those of the Abyss Watcher, except lacks Legendary resistance, Legendary actions, Mythic actions and this ability. The legion member starts with 42 hit points.

Parry. The Abyss Watcher adds 5 to its AC against one melee attack that would hit it. To do so, the Abyss Watcher must see the attacker and be wielding a melee weapon.

The Abyss Watcher can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The Abyss Watcher regains spent legendary actions at the start of his turn.

Leaping Strike. The Abyss Watcher moves up to its speed in a straight line through creatures without provoking opportunity attacks. It may then make an attack with its greatsword. If the Abyss Watcher's mythic trait is active, any creatures moved through by this action take 7 (2d6) fire damage.

Sweeping Edge. The Abyss Watcher makes an attack with its greatsword on all creatures in range.

Call to Arms (Costs 2 Actions). The Abyss Watcher uses the Farron's Legion action.

If the Abyss Watcher's mythic trait is active, it can use the option below as legendary actions for 1 hour after using Lord of Cinder.

Greatsword Attacks. The Abyss Watcher makes two attacks with its greatsword.

Stunning Strike. A creature within 5 feet must succeed a DC 14 Dexterity saving throw or take 10 (2d4 + 5) piercing damage and be stunned until The Abyss Watcher's next turn.