Cast Self-Reflection by paying its mana cost, targeting a creature you control.
Holding priority, cast Dualcaster Mage by paying {1}{R}{R}.
When Dualcaster Mage enters the battlefield, it triggers, copying Self-Reflection, targeting Dualcaster Mage.
Resolve the copy of Self-Reflection, creating a token copy of Dualcaster Mage.
Repeat from step 3.

Infinite creature ETB

Infinite creature tokens

Infinite magecraft triggers

Dualcaster Mage

Self-Reflection

Cast Self-Reflection by paying its mana cost, targeting a creature you control.
Holding priority, cast Naru Meha either from your hand or from the command zone by paying {2}{U}{U} plus commander tax, if applicable.
When Naru Meha enters the battlefield, it triggers, copying Self-Reflection, targeting Naru Meha.
Resolve the copy of Self-Reflection, creating a token copy of Naru Meha.
Put either Naru Meha into your graveyard due to the legend rule.
Repeat from step 3.

Infinite creature LTB

Infinite death triggers

Naru Meha, Master Wizard

Cast Self-Reflection by paying its mana cost, creating a token copy of Mirror-Mad Phantasm.
Activate the Mirror-Mad Phantasm token by paying {1}{U}, shuffling the token into your library and milling your entire library due to it not having a card named Mirror-Mad Phantasm in it.

Infinite self-mill

Mirror-Mad Phantasm

Activate Thunderclap Drake by paying {2}{U} and sacrificing it.
Cast Self-Reflection by paying its mana cost, targeting Biovisionary.
Thunderclap Drake triggers, copying Self-Reflection at least twice, with all copies targeting Biovisionary.
Resolve all Self-Reflection spells, creating at least three copies of Biovisionary.
At the beginning of your end step, each Biovisionary triggers, causing you to win the game.

Win the game

Biovisionary

Thunderclap Drake

Cast Mnemonic Deluge by paying {6}{U}{U}{U}, exiling Self-Reflection and casting three copies of it without paying their mana costs.
Resolve the three Self-Reflection copies, creating three token copies of Biovisionary.
At the beginning of your end step, each Biovisionary you control triggers.
Resolve the first trigger, causing you to win the game.

Mnemonic Deluge

Cast Self-Reflection by paying its mana cost, targeting Biovisionary.
Holding priority, activate Echo Mage by tapping it, copying Self-Reflection twice, with both copies targeting Biovisionary.
Resolve all Self-Reflection spells, creating three token copies of Biovisionary.
At the beginning of your end step, each Biovisionary triggers. Resolve the first trigger, causing you to win the game.

Echo Mage

At the beginning of your precombat main phase. Summon: G.F. Cerberus triggers, putting a lore counter on it and triggering its third chapter ability, copying the next instant or sorcery spell you cast twice.
Cast Self-Reflection by paying its mana cost, targeting Biovisionary.
Summon: G.F. Cerberus triggers, copying Self-Reflection twice, with the copies targeting Biovisionary.
Resolve all Self-Reflections, copying Biovisionary three times.
At the beginning of your end step, each Biovisionary triggers. Resolve the first trigger, causing you to win the game.

Summon: G.F. Cerberus

Cast Self-Reflection by paying its mana cost, creating a token copy of Bellowing Aegisaur.
Activate a mana-producing permanent you control by tapping it, adding at least {G}.
Activate Wayta by paying {G} and tapping it, causing Cacophodon and the nontoken Bellowing Aegisaur to fight each other, with each only taking 1 damage due to Temple Altisaur.
Cacophodon and Bellowing Aegisaur each trigger twice.
Resolve all Bellowing Aegisaur triggers, putting two +1/+1 counters on each other creature you control.
Resolve both Cacophodon triggers, untapping the mana-producing permanent and Wayta.
Repeat from step 2, alternating between having the token and nontoken Bellowing Aegisaur fight Cacophodon.

Combos with "Self-Reflection"