Auriok Salvagers + Lion's Eye Diamond
This combo generates infinite mana. You sacrificie Lion's Eye Diamond generating . You use two of the white mana to put Lion's Eye Diamond back into your hand to continue the process. You will always net one mana. With this infinite mana you can cast Breya, Etherium Shaper, which will sacrifice herself and one thopter to bolt everyone at the table.
Worldgorger Dragon + Animate Dead/Necromancy/Dance with the Dead + any other creature card in my graveyard
This also generates infinite mana to infinitely cast Breya, Etherium Shaper to bolt everyone at the table. This combo must start with two creature cards in my graveyard, with one of them being Worldgorger Dragon. You cast one of the enchantments listed in this combo to bring Worldgorger Dragon from the graveyard. Worldgorger Dragon's trigger resolves removing all permanents from the battlefield, including the enchantment used to reanimate it. Removing the enchantment forces you to sacrifice Worldgorger Dragon which will then return all permanents back to the battlefield. When the enchantment returns, you reanimate Worldgorger Dragon again. Before it's trigger resolves, you tap all of your lands for mana since they returned untapped. Then Worldgorger Dragon's trigger resolves. You continuously repeat this process for infinite mana.
Sharuum the Hegemon + Phyrexian Metamorph/Sculpting Steel + Bitter Ordeal/Altar of the Brood/Reckless Fireweaver
Phyrexian Metamorph and/or Sculpting Steel can either be in your hand or graveyard. Sharuum the Hegemon only needs to enter the battlefield. When it enters the battlefield (if either artifact is in your graveayard) you return the copy artifact, copying Sharuum the Hegemon. With Sharuum the Hegemon's trigger on the stack, the legend rule goes into play before it resolves. You choose to sacrifice the original Sharuum the Hegemon. The trigger from the copy resolves which you target the original Sharuum the Hegemon. When the original Sharuum the Hegemon enters the the battlefield, the legend rule must apply before the trigger, which you decide to sacrifice the copy this time. The original Sharuum the Hegemon's trigger resolves in which you chose the copy artifact. This create's an infinite loop. The win condition could be Bitter Ordeal which you remove everyone's library so that they lose when they go to draw, Altar of the Brood which mills everyone at the table, or Reckless Fireweaver which will damage everyone at the table for lethal damage.
Nim Deathmantle + Ashnod's Altar + Breya, Etherium Shaper + Bitter Ordeal/Altar of the Brood/Reckless Fireweaver
This combo has a similar win condition as the one above, except it does it in a different way. With both Nim Deathmantle and Ashnod's Altar on the battlefield, you cast Breya, Etherium Shaper. You sacrifice Breya, Etherium Shaper and one thopter to Ashnod's Altar to net . You use that mana to activate Nim Deathmantle's ability to bring back Breya, Etherium Shaper. Her ETB will bring back another two thopters. This will generate infinite thopters. The thopters are somewhat irrelevant being that you win with a Bitter Ordeal exiling everyone's decks, milling everyone out with Altar of the Brood, or damaging everyone at the table with Reckless Fireweaver.
Doomsday
Now this combo is something you really only play when you're going to win that turn. I've most likely cast Silence or have Grand Abolisher on the battlefield. The five cards you choose in order from top to bottom is Thought Scour, Worldgorger Dragon, any creature in the deck, Animate Dead (or one of the other reanimate enchantments), and the last card can be anything. When you draw Thought Scour (by draw phase, or something like Gitaxian Probe) you cast it targeting yourself. You mill Worldgorger Dragon and the other creature, then draw the reanimate enchantment. You reanimate Worldgorger Dragon to make the infinite mana combo.
Notion Thief package
This package includes Windfall, Winds of Change, Whispering Madness, Wheel of Fortune, and Molten Psyche. This doesn't win directly on the spot, but with my opponent's out of a hand, it can't be but so long until I can win with practically no resistance.