[Micah]

Magma bolt and blade wind are going to probably be your best bets for your smiths. General evocation spells.

Ideally you'll pull an F2 smith random or a pretender with fire magic so you can cast flaming arrows (on indies, not your arbalests). Research this over evo if you can pull it off. You'll need conj 3 for power summoning regardless.

Dropping a few Curse of stones will help as well in a big battle, but it won't help much til your troops start getting trampled to death, and you want to keep them away with ranged attacks if at all possible.

It's not a pretty matchup for Ulm though. Good luck.