Shardbearers are known to be extremely powerful warriors, easily having the strength of several men. They also have increased speed, stamina, and resilience, setting them apart from average soldiers.
They need space to fight; their Blades are so long that hurting one's companions is a very real danger.
Shardbearers are destruction incarnate, the most powerful force on a battlefield. They are considered to be beautiful divinity in battle. They aren't just a force of destruction; they are a force of morale and inspiration. They change battles.