[balance] moving the spell of mastery tech
Since this affects both fe and fe lh, maybe we can fix it for both.
The spell of mastery tech comes too early in the magic tech tree. A lot of AIs just head there and build the towers, rather than spend the gold/iron/crystal on units or something's else. They also don't actually try for the VC much.
My thought on this is to move the spell mastery tech back past the third book of the magi to ensure there's less 'casual' building of the towers.