While I wait for the Custom Games list to stop being frozen and completely useless, I thought I'd write up my most recent TB build for anyone who's interested.

The build is based on maximising HP and HP recovery, along with not dying.

Ok, so here goes!

Initial Kit:

• Banded Armor, 500 Gold. Nabs you +400 HP and +5 HPS.
• Scaled Helm, 550 Gold. Nabs you +525 Mana and +4 MPS.
• Favour Item: Blood of the Fallen. 750 Favour Points. Nabs you +800 HP and +5 HPS.
• Level 1 Ability: Circle of Fire 1.
  

That'll give you initial HP for TB of 1410 + 400 + 800 = 2610 HP.

Initial Play:

• If there's a Health Flag, go and grab it, get your 15% HP bonus. Cataract has one of these.
  
• Your HP should be able to give you an early advantage while you grab some XP.
• Try to get to Level 2 quickly, it usually only takes a flag and a few creeps. Once you have fireball, combined with Circle of Fire, you'll be able to damage enemies enough to get them running back or using potions, giving you an XP and gold advantage.
  
• Don't be stupid and try to take on 2 demi's by yourself. It's just not going to happen, even if you have 2k more health than them.
• If you can hold the health flag and creep zone, do it. You need to take advantage of the time your enemies are spending healing and running back to the health crystal. Don't advance, just sit there and farm the XP.
• Get to Level 5 before bothering to take on any towers.

Here's the build from there:

Abilities:

• Level 2: Fireball I
• Level 3: Skip
• Level 4: Fireball II, Circle of Fire II
• Level 5: Fire Nova I
• Level 6: Skip
• Level 7: Fireball III, Circle of Fire III
• Level 8: Skip
• Level 9: Skip
• Level 10: Fireball IV, Circle of Fire IV, Fire Nova II
• Level 11: Fire Aura I
• Level 12: Fire Aura II
• Level 13: Fire Aura III
• Level 14: Skip
• Level 15: Circle of Fire V, Fire Nova III
• Level 16, 17, 18, 19, 20: Enhanced Attributes

Items:

• Nimoth Chest Armor. 1500 Gold. Nabs you 500 HP & 750 Armor.
• Unbreakable Boots. 1500 Gold. Nabs you 600 HP, 800 MP & 5 HPS.
• The Speed Staff (forget the name). 1250 Gold. +25% speed for 8 secs, just use it to run away or to chase to get into fireball range.
• Plenor Battlecrown. 1500 Gold. Nabs you 1575 MP. If you need to, sell the Scaled Helm to get it earlier.
• Narmoth's Ring. 4000 Gold. Nabs you 750 Hp, +20 HPS, and 8% Health Steal.
  • I prefer this over Heart of Life. Heart of Life is a reactionary item, I prefer to get and stay in battle longer with Narmoth's Ring.
• Make up the rest as you go along.

Artifacts:

• Whatever you like really.
• I try to get the Girdle of the Giants, and later on, Bracelet of Rage.
  

General play hints:

• If you can, always sucker the enemy into a Circle of Fire. This works especially well against Melee demi's, but also helps to negate the QoT's shield.
• If you need to quickly kill off an early creep wave, do so with Circle of Fire, not Fire Nova. Less Mana.
  
• Don't buy Priests at the Citadel until after your opponent.
• Fire Nova III can take out an entire wave of creeps with priests/angels and cats. It's a fantastic way to gain some XP.
  
• Once your opponent gets Giants, you cannot defend as easily as your Fire Nova III won't kill them in one hit.
• If you're with a decent team and it's late in the game, get an ally to run off and steal portals while you defend at the Citidel. TB is the best defender in the game and can take out masses of creeps at once.
• When taking down towers, use Circle of Fire. It helps, and you can often take out more than one at a time. Same applies to rook towers.
  
• When levelling up from Fireball III to Fireball IV, if you can help it, don't use the fireball until your enemy is escaping. Most players are aware of how much damage spells are doing to them, if they expect an 850 hit and are escaping based on that, and you can get in a 1050 hit, you'll get a kill.
• Fireball range is great, and the demi only has to be in range at the time of casting. Let them run off, cast the fireball and kill them while they're on their way retreating.
• Use the speed staff to catch up to a retreating demi to get in range of a fireball.
• You can't move and attack at the same time. For this reason, demi's will escape you. Don't stress about it and don't be stupid and follow them into towers or a trap.

Weaknesses:

• Erebus is just about the only thing that causes me issues. My build leaves TB being slow to move, and Erebus can easily outrun an escaping TB, even if you use the speed staff. Furthermore, the Sleep ability can prevent you from teleporting, so be careful.
• Low Mana. This build doesn't really give you a massive Mana store. You have to be careful with it, and not waste too much. Don't bother using an ability to take out creeps if there's no rush.
• Traps. If you get caught in a 2 on 1 situation, try to get out of there using the speed staff. You may be able to take out one of the two, but unless you have an ally coming to back you up, you'll die before the 2nd enemy does.

That'll do.

Try it, see how you go. I can usually out-level most players, and if the teams are even, come out on top. If there's one way to turn around a losing battle, it's TB defence.

I'm sure it's similar, if not the same as other people's TB builds out there. I've made this one up myself, sorry if it's so close to yours and you feel ripped off - it's not intentional.

Questions and comments welcome.

Good day.

Edit: Thanks to www.demigoddb.com