[Lazy_Perfectionist]

This is not recommended, this is merely a sample pretender to demonstrate some principles for dom3.10 vanilla. You'll want different scales and dominion, most likely dormant. Maybe a different chassis. Anyways, I don't think Midgard is a nation that really wants for a supercombatant strategy.

Keeper of the Bridge, air 4, nature 4, earth 2. Awake, dom6, cold 1, magic 3, death 1.

At start, 80 hitpoints, 16 protection, 13 attack, 14 defense, 18 precision, 21 strength.
14 research, 3 encumberance: 2 basic, 3 melee, 4 spell

Spells of Interest

Personal Regeneration - The regen amount will vary based on your dominion (hitpoints boost), but you can expect about 17 hitpoints per turn in dominion 4. It only gets better from there out. Normally, that would cost you 40 fatigue, but it will work out to somewhere around 15.

Summon Earthpower - only interested for the reinvigoration, but 20 fatigue and one spell slot just for that? Better off forging.

Iron Skin - About 14 fatigue. Brings protection to twenty-six. Combines nicely with Regeneration.

Mirror Image - About 6 fatigue. Creates 8 mirror images. 8/9 chance an attack misses. Dangerous though- once hit once, its gone for good. Can be saturated.

Mistform - About 7 fatigue. Will fail if a). hit by magical weapon b). hit rather hard (after protection is taken into account, btw) c). fail 1% of the time on any hit.

Eagle Eyes, Air Shield- useful if you equip a bow, or if you're expectin missile fire.

The key thing to keep in mind about the air spells are the fail points. They're great, but high defense makes them even better.

Even with air shield, mirror image, and mistform, you'll die against cavalry, even if they're unable to deal you more than one damage.

I'd put my research into reaching alteration-3, then enchant-2, then construction 4. I'd send out my Keeper after alteration 3 was researched, but only against small, lightly defended provinces.

Construction to note:
Level 0- Sword of Sharpness (2H). At this stage I'd avoid shields and armor. The Sword of Sharpness has AP, attack, defense boni, and falls into your national gem income.
Level 2- Weightless Scale Mail reduces your encumberance even further. I'd avoid adding any encumberance yet.
Level 4- I'd forge the Girdle of Might for 3 reinvig. Without anything else but the above items, your fatigue will actually drop in combat.

There's a few more items I'd forge once the gems came in. Some its up to your choice, others, like the Boots of the Messenger are nearly essential. However, I suggested somethign well within your national gem income, 10 air, 10 earth.

Sample Script- Air Shield, Mirror Image, Mistform, Ironskin, Personal Regeneration, Attack

Cavalry has a nasty tendency of interrupting a long script. But still, with the above equipment and no support, positioned at the back of the screen, I can take on heavy cavalry. It might be best to cut that short, or change the order. If the mirror image blunts the first charge, than it does serve its purpose. Thanks to the Weightless armor, you finish casting with about 18 fatigue, going down every turn after.