If it was anyone but Rezo, Zelgadis might have some sympathy, having been caught in the same myopic fixation on his own problems, and only finding what he was looking for by chance, after accepting that it didn't exist on his own world. He'd only missed a couple of years of his own life, at least. "Three years? Or a bit more? It's been damned busy."

And while some of that (a lot of that) could be due to Shabranigdu's unsealing and Lina's defeat of him, the level of magic Lina threw around when pressed probably meant that it had been a matter of time before one of her spells would have kicked the metaphorical beehive. Having the triggering incident to reveal 'Lina can call on the Lord of Nightmares for spells' be Rezo's attempts to heal his own eyesight just meant that Zelgadis himself kept being dragged into it.

"Having a piece of Shabranigdu unsealed for the first time in a thousand years, then killed in a matter of days by humans, brings all sorts of things out of the woodwork."