Steve's telepathy functions differently than for normal telepaths, but he is still sensitive. Ty's booming voice makes him jerk back suddenly, due to the unexpected loudness.

"If needed, I can take control of one or two of the mages. My form of telepathy is tailored more with that purpose in mind (no pun intended). That should ease the strain on you, Ty, and eliminate the worry of flooding the magma should the other mages not realize they have been compromised."