When Gralith explained things like this, the jumbled mess in Sylas' mind seemed to order itself.
He had been so confused for so long about what he was seeing, but now he understood.
The further you got into the tome, the more looking at the Runes made you feel as though you were staring at mirages—as though if you tilted your head at a certain angle, you would suddenly see a completely different image.
This much was enough for him to feel quite confused, but he had tried to push through, memorizing not just the immediate Rune he saw, but the flickers forward and backward. He tried to grasp it all at once, and his mind had certainly suffered for it.
When he tried to use his Progenitor Flame Ability, the situation only got worse. It was like he was facing off against Gralith again. The buffer against his mind hit like whiplash.
But now it only made sense.