Long-Limbed. When you make a melee attack on your turn, your reach for it is 5 feet greater than normal.   Powerful Build. You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.   Surprise Attack. If you surprise a creature and hit it with an attack on your first turn in combat, the attack deals an extra 2d6 damage to it. You can use this trait only once per combat.   Great Weapon Fighting. When you roll a 1 or 2 on a damage die for an attack you make with a melee weapon that you are wielding with two hands, you can reroll the die and must use the new roll, even if the new roll is a 1 or a 2. The weapon must have the two-handed or versatile property for you to gain this benefit.   Action Surge. You can push yourself beyond your normal limits for a moment. On your turn, you can take one additional action. Once you use this feature, you must finish a short or long rest before you can use it again.   Unleash Incarnation. You can heighten your echo's fury. Whenever you take the Attack action, you can make one additional melee attack from the echo's position. You can use this feature 3 times. You regain all expended uses when you finish a long rest.   Extra Attack. You can attack twice, instead of once, whenever you take the Attack action on your turn.   Polearm Master. When you take the Attack action and attack with only a glaive, halberd, quarterstaff, or spear, you can use a bonus action to make a melee attack with the opposite end of the weapon. This attack uses the same ability modifier as the primary attack. While you are wielding a glaive, halberd, pike, quarterstaff, or spear, other creatures provoke an opportunity attack from you when they enter the reach you have with that weapon.   Sentinel. You have mastered techniques to take advantage of every drop in any enemy's guard. When you hit a creature with an opportunity attack, the creature's speed becomes 0 for the rest of the turn. Creatures provoke opportunity attacks from you even if they take the Disengage action before leaving your reach. When a creature within 5 feet of you makes an attack against a target other than you (and that target doesn't have this feat), you can use your reaction to make a melee weapon attack against the attacking creature.   Indomitable. You can reroll a saving throw that you fail. If you do so, you must use the new roll, and you can't use this feature again until you finish a long rest.