Time for headcanon to fill in where canon is vague.
"Okay, I think the best way to describe it is that an object's essence can be used in two ways. One way is directly applying and object's effects, and the other is bringing out the object. So, I can either directly use a healing potion magnus on someone to heal them, or bring out the potion itself. I usually do the first one. It's faster."
"It's an idea..."
You actually can do that in Baten Kaitos 1, but instead of glass, it's a sharp stick of bamboo that you throw at people.
edited 9th Mar '13 10:43:31 PM by Randomman5
-Rennor, Washu, and Bladewolf got caught, the Room is probably captured right now-
-Noodle, Sagi and Marno, and Karkat are hiding out in a dirt mound with a camouflaged parachute as cover-
-G is presumably outside the hideout hunting wildlife-
mario is red, i am green, i try my best, but everyone's mean

"Well, that's how it works. Capturing an object's magna essence stores it in the card, and I can get it out whenever I want."