kicks the code that suddenly wants to trade MANA between cities. Certain things can be hauled via wagon...tapped mysical energies aint one.
That really depends on the metaphysics for Elemental, and y'all are still being extremely terse on that subject.
I played way too much MoM back when downloading game patches took hours on a 2400 baud modem, so I also tend to assume that a mana source is more like an oil well than it is like a coal mine. But I'm pretty sure that at least one poster around here read the word "shards" and assumed that building a mana reserve meant collecting big bags of 'somethings' that fell or got hacked off of the cloth-map icons that currently don't look significantly different from mundane resources like iron or clay.