1. Can Masoom detect said covers with a Locate Object ritual? (He would experiment on said shield to see whether or not it'd work.)
I think you mean detect object. For an object that has only been described to you, you take a -10 penalty to your arcane check. Getting 40 or higher gives you only 100 squares. As Certa gave you info about a reserved section of station, you could try getting close to it and seeing if you get lucky.
2. Could Masoom modify the ship's engine so it's fast enough to keep up with the train, but powerful enough to lift a railcar off the tracks?
Some work could increase the performance of the airship, however trains have a notable advantage over airships as far as thrust is concerned. If the train as a large load, you could be able to catch up, but if they keep it light, your still forced to take advantage of track contstraints, or make a move when its moving up a hill. Given Masooms previous experience, the last bit should be no problem.
3. Masoom would like to cast Consult Mystic Sages concerning the Trigger. Are we going to take care of that in the forum, or pre-session Thursday?
Checking the compendium, I get this:
The ritual can’t uncover information beyond the ken of the most learned sages. It’s of no use if you’re trying to find the magic word that unlocks the vampire’s crypt, because only the vampire knows the word. Nor can the ritual tell you definitively where great stores of treasure are, but the mystic sages could tell you where a specific empress kept her treasury in ancient times or whether the treasure was looted when her empire fell.
Doesn't look like it'll help you much.
4. Going over what we learned about the Trigger from the notes, is it reasonable that test subjects might be shipped with the Trigger as well? Masoom's wondering if the cleric was checking on those 2 kids as potential test subjects for the Trigger, and they might be shipped to Argus at the same time.
Given your limited information, there is no hard evidence either way. So your just left to speculate.
Seems we're running out of time till the next session, so I suppose unless somone has something quick to post, we finish this up tomorrow night.