Cast a copy of Swords to Plowshares from exile by paying one mana, unpreparing Emeritus of Truce.
When you cast this, Displacer Kitten and Storm-Kiln Artist triggers.
Resolve the Displacer Kitten ability, flickering Emeritus of Truce // Swords to Plowshares.
When Emeritus of Truce enters, it triggers, causing a player to create a 1/1 Inkling creature with flying, then becoming prepared.
Resolve the remaining trigger, creating a Treasure token.
Resolve the spell from step 1.
Activate the Treasure token by tapping and sacrificing it, adding one mana.
Repeat.

Infinite artifact ETB

Infinite artifact LTB

Infinite creature ETB

Infinite creature LTB

Infinite magecraft triggers

Infinite storm count

Exile all creatures opponents control

Infinite lifegain

Infinite lifegain triggers

Infinite lifegain for opponents

Infinite lifegain triggers for opponents

Displacer Kitten

Storm-Kiln Artist

Emeritus of Truce // Swords to Plowshares

Cast Swords to Plowshares using the convoke ability from Party Thrasher by tapping Emeritus of Truce.
Displacer Kitten triggers, blinking Emeritus of Truce, which enters prepared.
Resolve Swords to Plowshares.
Repeat.

Infinite casts of a specific spell

Party Thrasher

Cast a copy of the prepared spell by paying its mana cost.
When you cast that spell, Displacer Kitten and Dovescape trigger.
Resolve the Dovescape trigger, countering the prepared spell and creating a number of 1/1 flying Bird creature tokens equal to its mana value.
Resolve the Displacer Kitten trigger, blinking Emeritus of Truce.
When Emeritus of Truce enters, it triggers, causing a player to create a 1/1 flying Inkling token and becoming prepared.
Activate Phyrexian Altar by sacrificing a Bird token, adding one mana of any color.
Repeat step 5 until you have enough mana to cast the prepared spell.
Repeat

Infinite colored mana

Infinite creature tokens

Infinite death triggers

Infinite creature sacrifice triggers

Dovescape

Phyrexian Altar

Cast the copy of Swords to Plowshares from exile by paying its mana cost.
When you cast that spell, Displacer Kitten triggers, flickering Emeritus of Truce.
When Emeritus of Truce // Swords to Plowshares enters, it and Mana Echoes triggers.
Resolve the Emeritus of Truce trigger, causing an opponent to create a 1/1 Inkling creature token with flying and preparing Emeritus of Truce.
Resolve the Mana Echoes trigger, adding at least {C}{C} since Displacer Kitten and Emeritus of Truce are both Cats.
Resolve Swords to Plowshares, exiling a creature an opponent controls and causing them to gain life.
Activate Energy Refractor by paying {2}, adding one colored mana.
Repeat any number of times.
If the board state allows, create an Inkling token in step 4 instead of targeting an opponent.

Infinite colorless mana

Mana Echoes

Energy Refractor

Combos with "Emeritus of Truce // Swords to Plowshares"