The war is going badly. Urtho hasn't had a full night's sleep in weeks. He definitely can't justify taking the time to do anything that isn't related to the war effort.
Magic research is related, though! If he can make an artifact that can open a Gate, they could leave it hidden and undetectable in territory they still hold for the moment but that they expect Predain's (face it, Ma'ar's) troops to move on at some point, and they'll have a way to Gate a strike force in that doesn't leave a Gate-mage vulnerable. General Judeth wasn't sure it would be helpful but he can probably talk her around on that.
(The artifact might not also come out that controllable, Urtho has to admit that his most innovative spellwork often...doesn't...but it could still be useful for, say, dumping a camp full of Predaini troops somewhere they would rather not be...)
He lost track of time candlemarks ago. The sun is rising, not that he can see it from the heavily shielded basement of the Tower. His past two prototypes just didn't work (the second one exploded and took down half the shields on his favorite Work Room) but he has a good feeling about this one.
He triggers it. From a safe distance, of course, watching through his scrying-artifact.
It does...something. It's absolutely not any normal kind of Gate, though.