The surrounding warriors were all stunned.
She had actually seen through it!
Indeed, the Doppelganger Slash had an advanced technique: creating a doppelganger with energy that lasted a very short time, but had the same power as oneself. Most people thought that a doppelganger must have low damage, so they let down their guard. That's when an equally powerful doppelganger could achieve remarkable feats.
It was extremely difficult for opponents in a battle to distinguish between a normal doppelganger and one with equal power. Hence, they were always very cautious during combat. Just now, Elsa had demonstrated what confidence looked like to all the warriors in an effortless manner. She could easily differentiate between a normal doppelganger and one with the same power!
"Okay, it seems I underestimated you, I must apologize," the warrior said, standing up straight.