Corvo Serkonos, Champion of The Raven Queen

Umbral Emergence. During his first turn, Corvo has advantage on attack rolls against any creature that hasn’t taken a turn. Any hit Corvo scores against a surprised creature is a critical hit.

Aura of Finality. While Corvo is conscious, enemy creatures within 10 feet of him have a -3 penalty to saving throws.

Eternal Champion. When Corvo is reduced to 0 hit points or dies, his body is destroyed but his spirit returns to the Raven Queen’s side, and he gains a new body after 1d4 days.

Umbral Evasion. If Corvo is subjected to an effect that allows him to make a Dexterity saving throw to take only half damage, he instead takes no damage if he succeeds on the saving throw, and only half damage if he fails.

Fate-Touched (4/Day). When the Champion makes an attack roll, ability check, or saving throw, he can reroll the d20 and use either roll. Alternatively, when a creature the Champion can see makes an attack roll against him, or a saving throw against one of his spells or features, he can force that creature to reroll the attack or save and use the new roll.

Innate Spellcasting. Corvo's innate spellcasting ability is Charisma (+10 to hit with spell attacks, save DC 18). He can innately cast the following spells, requiring no material components:

At will: bane, bless, darkness

1/day: greater invisibility

2/day: shadow of moil

Shadow Smite (1/Turn). Corvo deals an extra 49 necrotic damage when he hits a target with Blackrazor and he doesn’t have disadvantage on the attack roll.

Shadow and Ruin:  Corvo can summon one or both of his pet Dawndrinkers using an action. Shadow and Ruin claw through the weave between realms and appear in an unoccupied space within 15 feet of Corvo. They do not share his initiative roll in combat. 

Shard Bearer: Corvo bears both shards of the Raven Queen. He wears the haunting Deathwalker's Plate and wields the infamous Blackrazor.

Thirst of the Void: Corvo makes three attacks with Blackrazor

Blackrazor: Melee Weapon Attack: +15 to hit, reach 15 ft. one target. Hit: 10 (2d6 + 8) slashing damage. On a critical hit, the target must succeed on a DC 18 Wisdom saving throw or be frightened of Corvo for the rest of its life. 

Touch of Fate (Recharges after a Short Rest). Corvo touches a creature within 5 feet of him, and chooses to either heal or harm that creature, restoring 55 (10d10) hit points or dealing 55 (10d10) necrotic damage. If the creature is an unwilling target, it can avoid either effect with a successful DC 20 Dexterity saving throw.

Cunning Action. Corvo takes the Dash, Disengage, or Hide action.

Swift Execution (1/Day). Corvo uses Blackrazor to cast haste on himself. The blade maintains concentration for him, and he doesn’t suffer from lethargy when the spell ends.

Uncanny Dodge. Corvo halves the damage that he takes from an attack that hits him. He must be able to see the attacker.