I'm looking for defining combo decks from throughout Magic's history. They can pretty much any style: combo-control, prison, machines, whatever. They should focus around two colors. And I need some for EACH of the two-color combinations. Links, deck-lists, or just brief descriptions of the decks are all welcome.

I guess the first big one was Channel Fireball (and black lotus too!)

Prosperous Bloom was another early combo deck.
http://www.starcitygames.com/magic/misc ... Bloom.html

madness was a thing.

Psychatog, Affinity

Modern Twin
Melira variations
Dragonstorm
Baral Gifts storm
Legacy Gb Elves
Counterbalance
Scapeshift
UG Infect

Vektor has like 100 infinite combo decks so Ill ask him.

Also there was that infinite combo with that angel and humans in AVR standard, and of course the black tide deck.

Here's some decks, the first one can probably even be split into two different ones.
It's hard to say whether a deck counts a two-colored or not (e.g. dredge, which typically runs on no colors if it can get away with it).
mtgsalvation also has a long list of who knows how good quality.

I'll be impressed if you find a WB one, tbh. Ad Nauseam is WB at the core, but it uses other colors for win-cons and consistency.

Perhaps I should state my end goal. I'm trying to define a central combo strategy for each color pair in hopes of using that to design a combo based set. I can just make those up based on preference and color pie, but I'm interested in starting with what has actually existed.

The 2-color only requirement can be bent is the integral parts belong to 2-colors and the rest is just filling out the deck based on the best cards available in the format. So, for instance, RecSur can qualify as a BG combo deck since the primary components are those colors and the other color involvement is mostly just a toolbox of the best creatures in the format. ProsBloom, however, really is a BGU deck; it just doesn't work without the card drawing that the blue cards provide. That said, I'll take anything and just place it where I think it works best for my purposes.

we already have Solphos though
also, a lot of combo decks are based around, y'know, combos. You can't really make Copy Cats into a draft archetype.

I plan on you being wrong about that.

No love for madcap moon? smh

The Cheerios decks might deserve a mention, although they're both sort of three color.

Legacy Cheerios is mostly RG, but it plays white for Scapegoat.
Modern Cheerios is mostly WU, but it plays red for Grapeshot.

Neither of those decks has ever been super consistent, but they might work as inspiration.

Panda Express runs BW (Enduring Renewal + X-cost creatures + Bloood Artist-likes).

BudgetTwin runs GW. (Midnight Guard + Presence of Gond)

Neither had been a world beater though.

Aluren Cavern Harpy + Finisher (Soul Warden or Tendrils)
Deranged Hermit Phyrexian Plaguelord
Pandemonium Saproling Burst
Daru Spiritualist, Task Force + any Nomads En-Kor + Starlit Sanctum, Worthy Cause
Stasis + things. Garruk Wildspeaker?

Cephalid Breakfast starring Cephalid Illusionist and 0 mana targeted abilities (usually damage redirection from cards)
Narcomeoba + Dread Return + Big thing (the lunch for after your breakfast)

Gifts Ungiven + A card that can resurrect/regrow the combo cards you actually wanted. Bonus point iof the combo involves the graveyard or the cards come back themselves. (Unburial Rites is a favourite)
Gifts Ungiven is a stupid card to be honest.

The one I remember most is Second Sunrise with a load of Chromatic Spheres, spellbombs and other sacrificeable artifacts, but I think it was just monocolor. And I don't remember much else about the deck list.

U/W. Blue tutors up lotus bloom.

Dream Halls

Pyromancer Ascension

Burn at the Stake

Quillspike/Devoted Druid

Delusions of Grandeur/Donate

Doomsday

Dark Depths

Thopter Foundry/Sword of the Meek

My Commander deck also has the jankiest kill combo ever in Infinite Reflection + Vela the Night-Clad. I don't know if that counts.

Ah yes, this is the one:

http://www.starcitygames.com/article/25 ... odern.html

There's Beck // Call and Glimpse of Nature that were used with Heritage Druid to make a ton of Elves! It played very much like a combo deck.

Elf ball.

Here's a bad combo deck due to how many decks have ways out (and it gave them time to find those ways out);

Pariah + Stuffy Doll

Favourite combo ever. They can't kill you! Except with loss of life... "you lose the game" effects... bouncing Stuffy Doll... exiling Stuffy Doll... exiling/destroying Pariah... countering Stuffy Doll or Pariah... killing you before you get both out... etc... etc.. (which is why it's a bad combo).