As long as it doesn't come down on them or splatter them, Tidus doesn't care. The monster absorbs the shock more from the lightning attack, leaving it a wet, twitchy mess on the ground - and Tidus looking smug, putting his hands on his sides.

"Ha! What's to feel bad about? It was a great plan!" Which means, you're very welcome, Dex!! "We could've tried perceiving it away, if it was an illusion."

Is it? Isn't it? Who knows, only that they suck dealing with illusions they can't beat up.