When Paragon had fired the string of five arrows and the single curved shot, he had made it so that the timing of the arrows and the curved arrow would hit at the same time as the first arrow of the first string of arrows.
After clearing out those two, there were only four arrows now left from the string of arrows. The second and third arrows from the string of arrows were also easily blocked. But what no body had noticed was that a team of a dozen arrows which had been split into a team of three and nine had arrived at exactly this same time.
At the time the fourth arrow of the first string of arrows collided with the shield, the first group of three arrows also collided with the shield.
Baker's shield had been covered in his magic power enhancing its defensive ability but when the four arrows exploded on contact with it. The power they had carried destroyed the Barrier formed by magic power on the shield.