Blue can use a bonus action and expend one superiority die to gain advantage on his next attack this turn. If it hits, the attack deals 1d10 extra damage.

On his turn, Blue can use a bonus action to regain 1d10 + 10 hit points. He must finish a short or long rest before using this feature again.

When Blue hits a creature with a weapon attack, he can expend one superiority die to force a Strength saving throw. On a failed save, the target drops one object of Blue's choice and takes 1d10 extra weapon damage.

When Blue hits a creature with a weapon attack, he can expend one superiority die to deal 1d10 extra damage and impose disadvantage on the target's next attack against a creature other than Blue before the end of Blue's next turn.

When Blue hits a creature with a weapon attack, he can expend one superiority die to deal 1d10 extra damage and allow one friendly creature to use its reaction to move up to half its speed without provoking opportunity attacks from the target.

When Blue hits a creature with a weapon attack, he can expend one superiority die to deal 1d10 extra damage and force a Wisdom saving throw. On a failure, the target is frightened of Blue until the end of Blue's next turn.

When a creature misses Blue with a melee attack, Blue can use his reaction and expend one superiority die to make one melee weapon attack against that creature, adding 1d10 to the attack's damage if it hits.

When Blue hits a creature with a weapon attack, he can expend one superiority die to deal 1d10 extra damage and force a Strength saving throw. On a failed save, the target falls prone.

Choose one Fighting Style. Blue chose Defense, gaining a +1 bonus to AC while wearing armor.

Blue can use Action Surge to take one additional action on his turn. He must finish a short or long rest before using it again.

Blue is a Battle Master, gaining superiority dice, combat maneuvers, and proficiency with smith's tools.

Blue gains four d10 superiority dice. He knows seven maneuvers. A superiority die is expended when used and regained after a short or long rest. Maneuver save DC is 16.

Blue gains proficiency with smith's tools.

Blue can attack three times whenever he takes the Attack action on his turn.

Blue gains an Ability Score Improvement or feat.

Blue gains the Great Weapon Master feat.

Blue gains an Ability Score Improvement or feat.

Blue can reroll a failed saving throw. He must use the new roll and must finish a long rest before using this feature again.

When Blue hits with a weapon attack, he can expend a superiority die to deal extra damage and apply a maneuver effect. Known maneuvers: Disarming Attack, Feinting Attack, Goading Attack, Maneuvering Attack, Menacing Attack, Riposte, and Trip Attack.

Blue can add a superiority die to a weapon damage roll after seeing the roll but before learning whether the attack hits or misses.

Blue can spend 1 minute studying the comparative combat ability of two creatures, learning whether he is their equal, superior, or inferior in Strength score, Dexterity score, Constitution score, armor class, current hit points, total class levels if any, and fighter levels if any.

Blue's superiority dice become d10s, and he learns two additional maneuvers, for seven maneuvers known in total.

Common folk recognize Blue as one of their own and will shelter him, hide him, or offer modest aid when they can, though they will not risk their lives for him without good reason.