I am not a showcase kind of guy, but here is a quick down and dirty on Superman and his fortress of Solitude. It has a lot of similarities with bote's skinchanger, but Superman flies solo.
Here is the full level 85 build. You can easily get almost everything to satisfactory levels by 70-75, and additional +1 skills only helps.
https://www.tqcalc.com/TitanCalcd6f4d6f4rune9de6.html?mastery=Skinchanger&master1=4&master2=10&sa=30&m1=32-0-0-12-0-0-8-8-0-8-6-0-1-0-6-0-0-8-1-8-0-0-0-0-0&m2=40-10-0-10-16-5-10-10-6-10-1-1-5-1-0-12-0-8-6-8-0-12-0-15-0The key to this build is Freyella, which I cannot find in TQ DB, but I get them like candy and the epic gambler seems to have way too many in stock.
It's a Runemaster wet dream with the elemental damages and the 33% chance for 300% elemental damage...but Superman loves him some 25% recharge and with dual wielding these guys, you only need another 15-20% recharge to get a permanent Briar Ward (Fortress of Solitude).
Now, Tranquility and Briar Ward give a 82% energy cost reduction (well, 90% of the time). Since it is additive, just get another 18% more and spells be free.
So, you pop Briar Ward and keep it up, refresh if you killed everyone too quickly. Throwing weapons are great to pick off solicitors at your door. The fun is in the free Runic Mines. They cost nothing as long as you are chilling on your Bark-o-Lounger and with that much refresh, I think I can cast them every 2.1 seconds. Boom boom boom. Now they try to bum rush you, a free Thunderstrike that can be cast every second will level them.
Guardian Stones are free and almost permanent. Energy Shield is FREE (as long as you have enough mana to cast it if Tranquility doesn't pop. Plaque is there to help with bosses (but who has time to Plague when you are in your fortress watching TV).
Anyway, I'll post more updates as I get further with this guy.
Other key items that I have. Obviously Stonebiners +3.
Polaris is nice as it reduces cost, recharge and adds elemental damage.
Volva's Harden Wraps combined with Polaris puts me over the threshold for recharge and Energy Cost reduction.
I am using the Alfheim rings for now as they are overall pretty good. I am sure there are better.
Head and Torso are just the best I can find that give +1 skills. I was using the one head item that gives +15 HP and +15 Eng regeneration, but once I got my energy cost reduction over 100%, who needed that? Just potion if your skills are out of whack.
Once I got enough stats for Stonebinders and Freyella, the rest is going into Int for damage and Health for double dipping. This Superman is way more smart than strong.