They're safe enough. We must've tested them a dozen times.

[Or more. He lost count. He uses the couch to help him to his feet.]

So long as you're not smashing them against rocks or trying to heal a missing limb with them, they're fine. You'd need an actual healer for something like that, but they're good for minor injuries. Saves people a trip up the Spire to see me.

[And saves him from having to deal with said people.]