Comboliciousness

What are the decent known combos in extended?

I like combo decks, and want to find a combo to build around, but don't know where to start short of reading every extended entry in the gatherer older than Ravnica.

Some engines that I know of:

Enduring Ideal
Tendrils of Agony/Minds Desire/Storm Combo
Swans Combo

I guess that's all i can think of.

I would expect your best chance is either:
a) Swans+Chain of Plasma+Conflagrate
b) some type of Storm, like:
Mind's Desire
Dragonstorm
Pyromancer's Swath+Grapeshot
Empty the Warrens

Storm deck would include stuff like Ponder, Peer Through Depths, Seething Song, Rite of Flame, etc. I would search deckcheck.net for TEPS decklists from last season.

Is TEPS going to be viable without all those sac-lands?

If I play some version of jankstorm throughout the extended season, I might actually get tired of it...

The short answer is that I don't know. It won't goldfish as fast, but Cabal Therapy left the format and that really is huge for the deck. I sort of like Pyromancer's Swath+Grapeshot, but there's probably no reason not to include Mind's Desire and Empty the Warrens in such a deck, and probably 1 Tendrils while you're at it. I'm really bad at building combo decks though.

Intruder Alarm, Eggs, Kiki Jiki/Pestermite, Stuffy Doll/Guilty Conscious, Heartbeat, etc.

Eggs? Are we talking pre-rotation or post?
(Eggs are from Odyssey, list: http://www.deckcheck.net/deck.php?id=6586)

I forgot all about Kiki-Jiki/Pestermite though.
http://www.deckcheck.net/deck.php?id=14658

I messed around with Heartbeat a little but couldn't find anything I liked. There might be something there though.
EXT version: http://www.deckcheck.net/deck.php?id=11151
T2 transmute/Wierd Harvest version: http://www.deckcheck.net/deck.php?id=5516

As far as Eggs, there's still Sphere/Star/ConjBauble/Reshape(Pentad Prism)/Lotus etc. Here's a random ML list for AfRo:

4 Ghost Quarter
3 Seat of the Synod
3 Plains
1 Hallowed Fountain
4 Flagstones of Trokair
6 Island
1 Forest
1 Brain Freeze
2 Serum Visions
4 Chromatic Sphere
1 Pact of Negation
1 Chain of Vapor
2 Mystical Teachings
4 Reshape
4 Lotus Bloom
4 Second Sunrise
4 Conjurer's Bauble
4 Ponder
4 Chromatic Star
1 Tendrils of Agony
2 Reclaim
1 Brain Freeze
1 Pact of Negation
1 Wipe Away
3 Stifle
4 Mind's Desire
2 Disenchant
3 Defense Grid