Ello Ello Ello! (EDH / Commander)

Earlier iterations of this deck were designed more to get value out of Eloise while maintaining a generally fair game plan, with a few combos designed to end the game later on.

This version is refined. Still the same idea, but more dedicated to combo. Almost every card in the deck either is a part of a combo, slows opponents down, ramps, or draws cards.

Combos.

Eloise, Nephalia Sleuth + March of the Machines --- Artifacts tokens become 0/0 creatures and die, triggering Eloise, which creates a clue, which dies, ad infinitum. This ends the game in a tie.
Eloise + March of the Machine + Disciple/Marionette Master --- Same as above, but each dead token triggers the creature, draining your opponents. This wins the game, if no opponent has hexproof or a soul sister effect.
Junk Diver + Myr Retriever + Sai, Master Thopterist/Mirrodin Besieged + Ashnod's Altar --- Start with Diver or Retriever in play, the other in the bin, the other two cards in play. Sac the Retriever to Ashnod's, returning the Diver. Use the mana from Ashnod's to play the Retriever. Create a myr token. Sac the Retriever to Ashnod's, return the diver. Sac the token to Ashnod's to play the diver. This produces infinite colourless mana, and Myr tokens. Can then cast commander for infinite clues to draw a wincon.
Junk Diver + Myr Retriever + Pitiless plunderer + Ashnod's Altar --- Same process as above, produces infinite Treasure tokens instead of Myr.
Eloise + Summoning Station + Blasting Station + KCI/Ravager --- Summoning station creates a token. Sac the token to Blasting station. Eloise creates a Clue. Sac the Clue to Ironworks. This untaps summoning station.
Grand Architect + Pilli-Pala --- Use Architect's 2nd ability to make Pili-Pala blue. Tap Pili-Pala for 2 mana. Use that mana for it's own ability to untap itself. Produces infinite coloured mana.

Surely more combos I've yet to find. Please feel free to let me know if you find any.