William made use of the newly improved Arrays Talent immediately. He used the Plant Element to create a wooden Puppet and started adding improved Perfect Arrays to it. The process was simple at first, and many different Arrays were added to each part of the Puppet.
The situation changed when William tried to add the eighth improved Array to one of the Puppet's Arms. At this point, the number of Runes in each Array was 32, the maximum number he could control, which meant one of the Puppet's arms had almost 256 Runes.
He watched in frustration as the Puppet's arm disintegrated, unable to hold the power of all the Arrays. He tried again on another arm, but it was the same result.
So this is why people don't add too many Arrays... It all makes sense now... He thought of his residence in the Sect that was only protected by a few hundred Arrays despite its size that could easily fit several thousand.