Cast Technomancer by paying {5}{B}{B}.
When Technomancer enters, it triggers, causing you to mill three cards and return Phyrexian Metamorph from your graveyard to the battlefield as a copy of Technomancer.
When Phyrexian Metamorph enters, it triggers. Holding priority, activate Ashnod's Altar by sacrificing Phyrexian Metamorph.
Resolve the Phyrexian Metamorph trigger, causing you to mill three cards and return Phyrexian Metamorph from your graveyard to the battlefield as a copy of Technomancer.
Repeat from step 3.

Infinite LTB

Infinite ETB

Infinite sacrifice triggers

Infinite death triggers

Infinite self-mill

Infinite colorless mana

Put all artifact creature cards with mana value 2 or less from your library onto the battlefield

Put all artifact creature cards with mana value 2 or less from your graveyard onto the battlefield

Technomancer

Phyrexian Metamorph

Ashnod's Altar

Cast Sharuum either from your hand or from the command zone by paying {3}{W}{U}{B} plus commander tax if applicable.
When Sharuum enters the battlefield, it triggers, targeting Technomancer.
Holding priority, activate Krark-Clan Ironworks by sacrificing Sharuum.
Resolve the Sharuum trigger, returning Technomancer from your graveyard to the battlefield.
When Technomancer enters the battlefield, it triggers.
Holding priority, activate Krark-Clan Ironworks by sacrificing Technomancer.
Resolve the Technomancer trigger, causing you to mill three cards and return Sharuum from your graveyard to the battlefield.
Repeat from step 2.

Sharuum the Hegemon

Krark-Clan Ironworks

Cast Machine God's Effigy by paying {4}. Choose to have it enter the battlefield as a copy of Technomancer.
When Machine God's Effigy enters, it triggers. Holding priority, activate Machine God's Effigy by tapping it, adding {U}.
Activate Krark-Clan Ironworks by sacrificing Machine God's Effigy.
Resolve the Machine God's Effigy trigger, causing you to mill three cards and return Machine God's Effigy from your graveyard to the battlefield as a copy of Technomancer.
Repeat from step 2.

Infinite blue mana

Machine God's Effigy

Activate Daretti's second ability by removing two loyalty counters from them, sacrificing any other nonland permanent and returning Technomancer from your graveyard to the battlefield.
Technomancer enters the battlefield, milling three cards and returning Phyrexian Metamorph and any creature cards with total mana value 2 or less from your graveyard to the battlefield.
Phyrexian Metamorph enters the battlefield as a copy of Daretti.
Put the original Daretti in your graveyard due to the legend rule.
Activate Phyrexian Metamorph's second ability by removing two loyalty counters from it, sacrificing Technomancer and returning Daretti from your graveyard to the battlefield.
Put Phyrexian Metamorph in your graveyard due to the legend rule.
Activate Daretti's second ability by removing two loyalty counters from them, sacrificing one of the creatures returned in step 2 and returning Technomancer from your graveyard to the battlefield.
Repeat from step 2.

Put all creatures with mana value 1 or less from your graveyard and library onto the battlefield

Encroaching Mycosynth

Daretti, Scrap Savant

Cast Technomancer by paying {5}{B}{B}.
Technomancer enters the battlefield.
In response to its trigger, activate Phyrexian Altar by sacrificing Technomancer, adding {1}.
Resolve Technomancer's trigger, milling three cards and returning Karmic Guide from your graveyard to the battlefield.
Karmic Guide enters the battlefield, returning Technomancer from your graveyard to the battlefield.
Technomancer enters the battlefield.
Activate Phyrexian Altar twice by sacrificing Technomancer and Karmic Guide, adding {2}.
Repeat from step 4.

Infinite colored mana

Karmic Guide

Phyrexian Altar

Combos with "Technomancer"