[Lazy_Perfectionist]

Have a simple question, that doesn't need a thread of its own, but haven't been able to find an answer elsewhere in the forum? Ask here, please.

I'll start off by asking what are the mechanics of earthquake?
The manual lists 'def' as one of its characteristics, along with mundane. Does this spell do a roll against a unit's defense to determine if it hits? What kind of attack roll does it make? Does it get effectively more accurate as fatigue climbs?

If I have say, plenty of earth readers, some golem crafters, and a few Oracles of the Ancients (who cast 1, 2, 4, or 8 earthquakes), who'll survive? MA Agarthan LI has a good defense, though EA agarthans don't. And the mages don't have any armor at all...