Cast Myr Battlesphere by paying {7}.
Myr Battlesphere enters the battlefield, triggering its ability.
Holding priority, activate Tawnos by paying {U}{R} and tapping it, copying Myr Battlesphere's trigger.
Resolve both Myr Battlesphere triggers, creating eight 1/1 Myr artifact creature tokens.
At the beginning of your next upkeep, Mechanized Production triggers, creating a token copy of the artifact it is attached to and causing you to win the game.

Win the game at the beginning of your next upkeep

Tawnos, Urza's Apprentice

Mechanized Production

Myr Battlesphere

At the beginning of your combat phase, Mishra triggers, creating a token copy of Mindslaver that is a 4/4 artifact creature named Mishra's Warform in addition to it's other types.
Activate Mishra's Warform by paying {4}, tapping and sacrificing it, targeting an opponent.
Holding priority, activate Lithoform Engine's first ability by paying {2} and tapping it, copying Mishra's Warform's ability, targeting any other opponent.
Activate Tawnos by paying {U}{R} and tapping it, copying Mishra's Warform's ability, targeting any other opponent.
Resolve all Mishra's Warform abilities, causing you to gain control of the targeted opponents during their next turns.
Repeat during each of your turns.

You control up to three target opponents on each of their turns

Mishra, Eminent One

Mindslaver

Lithoform Engine

At the beginning of the upkeep step, Sands of Time triggers.
In response, tap all of your mana producing permanents.
Activate Tawnos, copying the Sands of Time trigger.
Let the copy resolve, untapping all your creatures, lands, and artifacts.
Repeat from step 2.


Infinite mana lands you control can produce during the upkeep step

Infinite taps

Infinite untap

Infinite mana artifacts you control can produce during the upkeep step

Infinite mana creatures you control can produce during the upkeep step

Sands of Time

Activate Magistrate's Scepter, removing 3 charge counters to take an extra turn.
Activate Tawnos, copying the extra turn ability.
Pass the turn.
At the beginning of your upkeep, Energy Chamber triggers, putting a charge counter on Magistrate's Scepter.
Activate Magistrate's Scepter, putting a charge counter on itself.
Activate Tawnos, copying the trigger.
Pass the turn.
Repeat.

Infinite turns

Magistrate's Scepter

Energy Chamber

At the beginning of your combat phase, Mishra triggers, creating a token copy of Mindslaver that is a 4/4 artifact creature named Mishra's Warform in addition to it's other types.
Activate Mishra's Warform by paying {4}, tapping and sacrificing it, targeting an opponent.
Holding priority, activate The Peregrine Dynamo by paying {1} and tapping it, copying Mishra's Warform's ability, targeting any other opponent.
Activate Tawnos by paying {U}{R} and tapping it, copying Mishra's Warform's ability, targeting any other opponent.
Resolve all Mishra's Warform abilities, causing you to gain control of the targeted opponents during their next turns.
Repeat during each of your turns.

The Peregrine Dynamo

Cast Isochron Scepter by paying {2}.
Isochron Scepter enters the battlefield, triggering its imprint ability.
Holding priority, activate Tawnos by paying {U}{R} and tapping it, copying Isochron Scepter's trigger.
Resolve both Isochron Scepter triggers, exiling Trickbind and Final Fortune from your hand.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Final Fortune without paying its mana cost.
Resolve Final Fortune, causing you to take an extra turn after this one.
Move to your next turn.
At the beginning of the end step during your extra turn, Final Fortune triggers.
Holding prioirty, activate Isochron Scepter by paying {2} and tapping it, casting a copy of Trickbind and Final Fortune without paying their mana cost.
Resolve Trickbind, countering Final Fortune's trigger from step 8.
Repeat from step 6.

Isochron Scepter

Trickbind

Final Fortune

Cast Isochron Scepter by paying {2}.
Isochron Scepter enters the battlefield, triggering its imprint ability.
Holding priority, activate Tawnos by paying {U}{R} and tapping it, copying Isochron Scepter's trigger.
Resolve both Isochron Scepter triggers, exiling Tale's End and Final Fortune from your hand.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Final Fortune without paying its mana cost.
Resolve Final Fortune, causing you to take an extra turn after this one.
Move to your next turn.
At the beginning of the end step during your extra turn, Final Fortune triggers.
Holding prioirty, activate Isochron Scepter by paying {2} and tapping it, casting a copy of Tale's End and Final Fortune without paying their mana cost.
Resolve Tale's End, countering Final Fortune's trigger from step 8.
Repeat from step 6.

Tale's End

Cast Isochron Scepter by paying {2}.
Isochron Scepter enters the battlefield, triggering its imprint ability.
Holding priority, activate Tawnos by paying {U}{R} and tapping it, copying Isochron Scepter's trigger.
Resolve both Isochron Scepter triggers, exiling Stifle and Final Fortune from your hand.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Final Fortune without paying its mana cost.
Resolve Final Fortune, causing you to take an extra turn after this one.
Move to your next turn.
At the beginning of the end step during your extra turn, Final Fortune triggers.
Holding prioirty, activate Isochron Scepter by paying {2} and tapping it, casting a copy of Stifle and Final Fortune without paying their mana cost.
Resolve Stifle, countering Final Fortune's trigger from step 8.
Repeat from step 6.

Stifle

Deal combat damage to an opponent using Etrata, triggering its ability.
Holding priority, activate The Peregrine Dynamo by paying {1} and tapping it, targeting Etrata's trigger.
Holding priority, activate Tawnos by paying {U}{R} and tapping it, copying The Peregrine Dynamo's trigger, targeting Etrata's trigger.
Resolve both Peregrine Dynamo triggers, copying Etrata's trigger twice.
Resolve all Etrata triggers, exiling three creatures an opponent controls and putting hit counters on them, and then causing that opponent to lose the game.

Target opponent loses the game

Etrata, the Silencer

Deal combat damage to an opponent using the creature that has Biorganic Carapace attached, triggering it.
Holding priority, activate Tawnos by paying {U}{R} and tapping it, copying the creature's trigger.
Resolve the copy of the creature's ability, drawing a card for each modified creature you control.
Holding priority, activate Mind Over Matter by discarding a card, untapping Tawnos.
Activate Mind Over Matter by discarding a card, untapping a mana-producing permanent.
Activate the mana-producing permanent by tapping it, adding {U/R}.
Repeat from step 5 one additional time.
Repeat from step 2.

Infinite self-discard triggers

Infinite draw triggers

Infinite looting

Near-infinite card draw

Near-infinite untap of permanents you control

Near-infinite mana permanents you control can produce

Biorganic Carapace

Mind Over Matter

Deal combat damage with the creature that Sword of Forge and Frontier is attached to.
Sword of Forge and Frontier triggers.
In response, activate creatures you control by tapping them, adding at least {2}{U}{B}{R}.
Activate Tawnos by paying {U}{R} and tapping them, copying the ability of Sword of Forge and Frontier.
Cast Activated Sleeper by paying {2}{B}, choosing not to copy anything.
Activated Sleeper enters the battlefield and dies.
Mortuary and Intruder Alarm trigger.
Resolve Intruder Alarm's trigger, untapping all creatures you control.
Resolve Mortuary's trigger, putting Activated Sleeper from your graveyard on top of your library.
Resolve the copied abiltiy from Sword of Forge and Frontier, exiling Activated Sleeper and one other card from the top of your library, allowing you to play those cards this turn, and allowing yourself to play an extra land this turn.
Repeat from step 3 until there are no more cards left in your library.

Combos with "Tawnos, Urza's Apprentice"