Ah, I see the concern. I was just figuring it would read actual languages (as per the speak language and monster manual entries), not made up gibberish. The easiest way to shore that up is by limiting it to reading only languages the caster knows. So, with the limitation that it can only read texts written in languages the caster knows, has a voice that is obviously illusory, and the clarification that the skull doesn't count as "a creature with a language", is the hovering effect still too powerful, or should I remove that as well?