[Etaoin Shrdlu]

SC: S&A doesn't have Consorts. Seeking Arrow is Ench, not Evoc. I get those mixed up too sometimes. Also it's Air 3, not very spammable.
1000YS: Research Construction next! At least to 6, and preferably 8, to make sure the artifacts are in your control. Even the ones you don't plan on using, but don't want to see coming at you.
Maybe a couple levels of Thaumaturgy for the other site-search spells (a full boat of M5Es can do a clean search-- except for Blood and Unholy sites, but there aren't enough of those to help much...)
Is Pythium playing standard or Serpent Cult? If standard, keep pressing to take the capitol... you'll need the pearls for a lot of things. And 7/turn won't be enough... have you been Arcane Probing the inner provinces? Alternatively, ticket an M5E (+W) for clam-spamming... one thing Arco can't do anymore that they had been able to do before the balance mods!
An M5E (+E) and two CMs (one +E, and one +S -- if you caught one with both you should be ecstatic) can combine for Rings of Wizardry (Ought to be obvious what the stepping stone items are.). Give one of those to a M5E and he can lead a simply massive stack of magical beings (tack on a Staff of Elemental Mastery A/E for even more fun--- and gives pretty good protection in the bargain, as pay-back for only giving one resistance.)
Has Ho Hsien-Ku turned up? She can make the boosters to N5... can you say Beckoning (THAU 6)? It'll make forest provinces virtual no-go zones once you've done it a few times. You want evil tactics, is that one evil enough for ya? For less evil applications, she can cast Gift of Health too (ENCH 5) when holding Treelord's Staff. (Only if you have Nature gems coming out of your ears though-- it'll get dispelled right off the break otherwise!)
Li T'ieh-Kuai checked in? Evocation 7 please, for Nether Darts. Put him off to one side on the combat board in case he gets caught in the same province with one of your armies. Forget once... never again. Or boost him to S4 so he casts Ether Gate. Same destructive power, no disease aura.
Might think of more later...