So to overflow into martial, we need to net: 3 to get Econ up to 14, 2 to make up for the Diplo we spend, 2 to get Mysticism up to 14. So that's 7 right there. This actually isn't as bad as I thought it was. I still think Saltern is is the best idea; with Saltern, we'd need to get 11 Econ to overflow into Martial, which is obviously impossible. We would instead end up with 14 Art, 14 Econ, 13 or 14 Diplo, and 12 or 13 Mysticism, depending on the roll. With Snails, we'd be at 14 Art, 14 Econ, 14 Diplo, and 12, 13, or 14 Mysticism, depending. VERY close to overflowing into Martial, but not there yet.