Now that your library is in your graveyard, you want to put
Muldrotha, the Gravetide into play. The first way that you can achieve this is by flashing back
Dread Return targeting
Muldrotha, the Gravetide. When you mill your library, you will choose to put
Narcomoeba into play. If you only have one other creature, you can unearth
Fatestitcher for
. Sacrifice three creatures to put
Muldrotha, the Gravetide into play. If you used the
Ad Nauseam method to mill your library, you will use the
Necromancy along with your three floating mana to put
Muldrotha, the Gravetide into play. If you used method E, you already have
Muldrotha, the Gravetide in play.
To go infinite from here, you will first use Muldrotha, the Gravetide to cast Lion's Eye Diamond and sacrifice it for . Use this mana to cast Phantasmal Image copying Muldrotha, the Gravetide. You will sacrifice Muldrotha, the Gravetide to the legendary rule and be left with Phantasmal Image and . You will then cast Lion's Eye Diamond again and sacrifice it for . Use three mana to cast Necromancy targeting Muldrotha, the Gravetide. You will sacrifice Phantasmal Image this time to the legendary rule and be left with Muldrotha, the Gravetide and either or . Repeat this process for infinite and . Repeat this process even more but use your floating to play Phantasmal Image and floating for Necromancy and sacrifice the Lion's Eye Diamond for other colors of mana. You will now have infinite mana of all colors.
You can now cast all permanents in your graveyard(thanks you the Muldrotha, the Gravetide loop), your commanders, and all of the cards from your hand. Make sure to put Grand Abolisher into play as soon as possible. You will want to use Thrasios, Triton Hero's ability to draw all of the cards in your deck/put the lands into play tapped if there are any remaining(DO NOT USE THE ABILITY IF THERE ARE NO CARDS IN YOUR LIBRARY BECAUSE YOU WILL USE THE GAME!). If Timetwister is in your graveyard, you will want to cast either Eternal Witness or Noxious Revival(Use mana to pay for Noxious Revival because you have infinite mana, but not infinite life) targeting Timetwister. You can cast Timetwister, shuffling your hand and graveyard into your library and redraw everything with Thrasios, Triton Hero. You can cast Noxious Revival again to get back Timetwister starting over the loop. This Timetwister loop allows you to take any cards that are in your graveyard and put them into your hand allowing you to cast instants/sorceries infinitely. Be careful, because each time that you cast Timetwister, your opponents will have a new hand to do things with.
The first thing that you can use this loop for is to cast Pull from Eternity until you have gotten back all of the cards that your opponents have exiled. You can then Cyclonic Rift (overloaded for hexproof/shroud/protection) all of your opponent's nonland permanents. If your opponent would lose the game from this because of a card like Lich's Mastery, you can cast Hive Mind followed by Angel's Grace before casting Cyclonic Rift (overloaded). You will have to replay any nonland permanents you had in play.
You can take infinite turns by using Mindslaver. You can play and sacrifice them using Timetwister loops. Make sure that you have at least one card in your library before passing the turn so that you don't lose by drawing a card with an empty deck. You also need to have a Muldrotha, the Gravetide and Thrasios, Triton Hero in play with Necromancy, Lion's Eye Diamond, and Phantasmal Image in your hand/graveyard. You can pass the turn and on each of your opponents' turns do nothing to get back to your turn. If you want to do anything on an opponent's turn, you can use Alchemist's Refuge. Make sure to bounce/destroy your Mana Crypt if it's in play so it doesn't kill you.
You can now get rid of all of your opponents lands using Strip Mine. Each turn, destroy a land using Strip Mine and replay it using Timetwister loops. This will leave your opponent with no permanents.
To get back their cards back from exile, if the card is face up you can cast Hive Mind followed by Pull from Eternity and then Cyclonic Rift (overloaded). If the cards are not face up, depending on how they were exiled, you might be able to use Mindslaver to get those cards to no longer be exiled. I will later be explaining how to give your opponents infinite mana, which might be necessary. There is a chance, however, that they have a card that is permanently exiled face down.
To give your opponent infinite mana, you will start out by playing Lotus Petal and Tezzeret the Schemer. You will plus Tezzeret the Schemer every turn until you can ultimate it and then ultimate it. During your combat, you will target Lotus Petal turning it into a creature. You will then use Forbidden Orchard every turn to give your opponent an infinite amount of 1/1 Spirit tokens. Whenever you want, you can give your opponent infinite mana by choosing the Lotus Petal with Cytoshape and targeting a Spirit. You can then sacrifice the Spirit for mana. With this mana you can cast your opponents' commanders to bounce them with Cyclonic Rift.
Now, to turn your opponents cards into creatures, you can manifest their deck with Reality Shift by using a Spirit. To get rid of the cards in your opponent's hand, you will pass the turn to your opponent you will then use Hive Mind along with Angel's Grace during their upkeep. You will then cast Brainstorm to put two of their cards on top of their library. Destroy the Hive Mind with Reclamation Sage and sacrifice the Reclamation Sage with Diabolic Intent (fail to find). Use Reality Shift to manifest the cards in their library. Repeat this process (you only need Angel's Grace the first time) until all of their cards are manifested. For any creature (where the creature won't mess things up) that an opponent controls that is manifested, I personally choose to flip the creature over to its normal creature form. Now every card that your opponent had in their deck, including their commander and most exiled cards, are in play as creatures.
You will want now sacrifice all of the lotus petal Spirits. Then, play your Blacker Lotus and turn it into a 5/5 creature with Tezzeret the Schemer's emblem during your combat. Pass back to your opponent's turn. Use Hive Mind, Angel's Grace, Reclamation Sage, and Diabolic Intent again to make sure that they do not lose the game. Use Cytoshape to turn your opponent's creatures (just the one who's turn it is) into Blacker Lotuses. Now comes the fun part.
Many people think that if you are being Mindslavered, you cannot concede the game. Others think that cards like Angel's Grace prevent you from conceding. While playing MTG, you are allowed to concede at any time, but you don't have to tell you opponents that(don't lie to them, though). Even by exploiting Frankie Peanuts, you can't stop your opponents from conceding. Others are too stubborn to concede. Hopefully your opponents fall into one of these categories. If so, you can go one by one and rip up you're opponent's cards for mana. You've done it. Either you can now concede or you can pass the turn until it is their turn again causing them to lose by drawing a card with no library. Have fun!