Shadow makes two greatsword attacks and can use Studied Attacks to follow a miss with another attack against the same target.

Shadow takes an additional action, usually to attack, Dash, or protect a vulnerable ally.

Shadow uses Second Wind, regains 1d10 + 15 hit points, and moves up to half his Speed without provoking Opportunity Attacks.

Shadow can regain hit points as a Bonus Action by expending one of four uses of Second Wind. He regains two uses after a Short Rest and all uses after a Long Rest. At this level, each use restores 1d10 + 15 hit points.

Shadow makes a greatsword attack against a creature within his reach. If the attack hits, the target's Speed becomes 0 until the start of Shadow's next turn.

Shadow attacks a nearby spellcaster as a Reaction when it casts a spell, using Mage Slayer to disrupt its advantage.

Shadow gains the Defense Fighting Style, granting a +1 bonus to Armor Class while wearing armor.

Shadow can use Mastery properties with six weapons of his choice. His mastered weapons are the greatsword, longsword, handaxe, javelin, shortbow, and spear.

Shadow can take one additional action on his turn. He can use this feature twice per Long Rest, but only once per turn.

When Shadow fails an ability check, he can expend a use of Second Wind to add 1d10 to the check, potentially turning failure into success.

Shadow chooses the Champion subclass, specializing in relentless attacks, physical excellence, and superior critical strikes.

Shadow gains the Great Weapon Master feat. He can reroll a damage die showing 1 or 2 when using a weapon with the Heavy property, and he gains additional benefits when scoring a critical hit or reducing a creature to 0 hit points.

Shadow makes two attacks whenever he takes the Attack action. He can also move up to half his Speed immediately after using Second Wind without provoking Opportunity Attacks.

Shadow gains the Sentinel feat. A creature hit by his Opportunity Attack has Speed 0 for the rest of the turn, and Shadow can make an Opportunity Attack when a creature within his reach attacks someone other than him.

Shadow has Advantage on Initiative rolls and on Strength (Athletics) and Dexterity (Acrobatics) checks. He also gains a heightened jumping ability, allowing his jump distance to equal his Speed when he moves at least 10 feet immediately before jumping.

Shadow's Weapon Mastery techniques improve through combat study. Once per turn when he misses with an attack using a mastered weapon, he can make another attack against the same target with that weapon as part of the same action.

Shadow gains the Tough feat, increasing his maximum hit points by 30.

Shadow can reroll a failed saving throw. He must use the new roll, and he can use this feature twice per Long Rest.

Shadow gains the Alert feat. He adds his Proficiency Bonus to Initiative rolls and can switch his Initiative result with a willing ally at the start of combat.

Shadow can use Indomitable three times per Long Rest.

Shadow gains the Mage Slayer feat. When a creature within 60 feet casts a spell, Shadow can use his Reaction to make a melee attack against that creature if he can reach it, and he has Advantage on saving throws against spells cast by creatures within 5 feet of him.

Shadow scores a Critical Hit on an attack roll of 18, 19, or 20.

Shadow has a 5 percent chance to gain Heroic Inspiration whenever he starts his turn without it.

Shadow retains the authority and discipline of a former military operative. Soldiers recognize his bearing, understand his commands, and may provide basic shelter, information, or assistance when doing so does not directly oppose their orders. He can also identify military hierarchy, tactics, and insignia with ease.