William didn't take part in making arrays, instead he kept examining and observing the pyramids around. He didn't drop the idea of getting to know what these pyramids were. And yet after days of examining, all he got was little info about them.
"They can store spirit power, and yet they have limited ability to do so. The amount they can store isn't that much, and that may explain the huge number of them here…"
This was the first discovery he noticed, and then after two days of observation and walking around, he noticed something else.
"The ground… It's pulsating with power between a group of pyramids augmented by my arrays…" he noticed that with every group of pyramids, some sort of a link was established there.
As his weapons kept building more arrays, more pyramids kept shining brighter, and also the ground. But it felt like pulses of power got emitted in between these pyramids, like some sort of a signal or something.