Brain too smooth for book curse, please help

[Cinders-Two]

Henricus wants me to say something in Latin. I assume that the answer is staring me in the face like all the other curses so far, but I can't figure it out.

I tried "Felis natalis" (which google translate says should be Latin for Happy birthday, didn't work), I tried "Senatus populusque romanus" (didn't work, but I thought I might give it a try), and I even tried "Latin Happy birthday Latin" just in case.

I assume there's some hint in the environment, or maybe the character dialogue, but I can't find it.

[Illudium]

"Felix sit natalis dies", not just "felis natalis". I don't speak any Latin, but it was the first result when I did a Google search for "happy birthday Latin". "Felis natalis" is probably literally accurate, but in classic Google Translate fashion, loses the grammatical structure you're going for. "The people called Romans, they go the house."

[Possibly a bot]

Felix natalis, not felis

[Illudium]

Originally posted by Possibly a bot:

Felix natalis, not felis

Or maybe that and I was way overthinking it, yeah.

[lilalikeslemons]

Leave the curse machine and go look at the bookshelf on the far left.

[PKPenguin]

You can also talk the guy into letting you pass without knowing any Latin.

[Cyber10]

Or you can just threaten the dude's eyes lol

[wml11]

I just used Google translate :-D