Activate all basic lands you control by tapping them, adding at least {6}{G}{G}{G}{G}{G}.
Cast Early Harvest by paying {1}{G}{G}, untapping all basic lands you control.
Activate Shigeki's channel ability by paying {4}{G}{G} and discarding it, returning Early Harvest and Regrowth from your graveyard to your hand.
Cast Regrowth by paying {1}{G}, returning Shigeki to your hand from your graveyard.
Repeat.
If basic lands you control can tap to produce at least {7}{G}{G}{G}{G}{G}, this combo nets infinite mana.

Infinite magecraft triggers

Infinite mana basic lands you control can produce

Infinite self-discard triggers

Infinite storm count

Infinite untap of basic lands you control

Return most cards from your graveyard to your hand

Shigeki, Jukai Visionary

Regrowth

Early Harvest

Activate all mana-producing lands you control by tapping them, adding at least {9}{G}{G}{G}{G}.
Cast Rude Awakening by paying {4}{G}, untapping all lands you control.
Activate Shigeki's channel ability by paying {4}{G}{G} and discarding it, returning Rude Awakening and Regrowth from your graveyard to your hand.
Cast Regrowth by paying {1}{G}, returning Shigeki to your hand from your graveyard.
Repeat.
If lands you control can tap to produce at least {10}{G}{G}{G}{G}, this combo nets infinite mana.

Infinite mana lands you control can produce

Infinite untap of lands you control

Rude Awakening

Cast Chatterstorm by paying {1}{G}.
Chatterstorm's storm ability triggers, creating a copy of Chatterstorm for each spell you've cast previously this turn.
Storm-Kiln Artist triggers for each Chatterstorm, creating that many Treasure tokens.
Resolve each Chatterstorm, creating that many 1/1 Squirrel creature tokens.
Activate two Treasure tokens by tapping and sacrificing them, adding {1}{G}.
Cast Regrowth by paying {1}{G} and tapping two Squirrel tokens, targeting Chatterstorm.
Regrowth's conspire ability triggers, creating a copy of Regrowth targeting Bala Ged Recovery.
Storm-Kiln Artist triggers twice, creating two Treasure tokens.
Resolve both Regrowths, returning Chatterstorm and Bala Ged Recovery from your graveyard to your hand.
Repeat steps 1-4 one time.
Activate three Treasure tokens by tapping and sacrifcing them, adding {2}{G}.
Cast Bala Ged Recovery by paying {2}{G} and tapping two Squirrel tokens, targeting Chatterstorm.
Bala Ged Recovery's conspire ability triggers, creating a copy of Bala Ged Recovery targeting Regrowth.
Storm-Kiln Artist triggers twice, creating two Treasure tokens.
Resolve both Bala Ged Recoveries, returning Chatterstorm and Regrowth from your graveyard to your hand.
Repeat.
Once you have infinite creature and Treasure tokens, you may substitute any other green instant and/or sorcery spells for Chatterstorm.

Infinite casts of green instants and sorceries in your hand and graveyard

Infinite colored mana

Infinite creature tokens

Infinite ETB

Infinite Treasure tokens

Wort, the Raidmother

Storm-Kiln Artist

Chatterstorm

Bala Ged Recovery // Bala Ged Sanctuary

Cast Brass's Bounty by paying {6}{R} and tapping two red creatures you control, causing it to be copied due to its conspire ability, creating at least 20 Treasure tokens.
Activate sixteen Treasures by tapping and sacrificing them, adding {10}{R}{R}{R}{G}{G}{G}
Cast Revel of the Fallen God by paying {3}{R}{R}{G}{G} and tapping two red and/or green creatures you control, causing it to be copied due to its conspire ability, creating eight 2/2 Satyr creature tokens with haste.
Cast Regrowth by paying {1}{G} and tapping two Satyrs, causing it to be copied due to its conspire ability, returning Brass's Bounty and Bala-Ged Recovery from your graveyard to your hand.
Cast Brass's Bounty by paying {6}{R} and tapping two Satyrs, causing it to be copied due to its conspire ability, creating at least 20 Treasure tokens.
Activate nineteen Treasures by tapping and sacrificing them, adding {12}{R}{R}{R}{G}{G}{G}{G}.
Cast Bala-Ged Recovery by paying {2}{G} and tapping two Satyrs, causing it to be copied due to its conspire ability, returning Regrowth and Revel of the Fallen God from your graveyard to your hand.
Repeat from step 3.

Infinite tapped creature tokens

Brass's Bounty

Revel of the Fallen God

Cast Early Harvest by paying its mana cost, untapping at least five basic lands.
Cast a copy of Regrowth from exile by paying {1}{G}, targeting Early Harvest.
Spellweaver Helix's last ability triggers, allowing you to cast the Extra Combat Sorcery, giving you an additional combat phase and an additional main phase this turn.
Resolve the copy of Regrowth, returning Early Harvest from your graveyard to your hand.
Declare Emeritus of Abundance as an attacker.
When Emeritus of Abundance attacks, it triggers, becoming prepared.
Repeat each main phase.

Infinite combat phases

Extra Combat Sorcery

Spellweaver Helix

Emeritus of Abundance // Regrowth

Cast a copy of Regrowth from exile by paying {1}{G}, targeting any card besides the actual Regrowth.
Pyromancer's Ascension's first ability triggers, allowing you to put a quest counter on it.
Resolve the copy of Regrowth, returning that card from your graveyard to your hand.
Declare Emeritus of Abundance as an attacker.
When Emeritus of Abundance attacks, it triggers, becoming prepared.
During your second main phase, cast a copy of Regrowth by paying {1}{G}, targeting the actual Regrowth card.
Pyromancer Ascension's first ability triggers, allowing you to put a quest counter on it.
Resolve the copy of Regrowth, returning Regrowth from your graveyard to your hand.
Cast Early Harvest by paying its mana cost.
Pyromancer Ascension's second ability triggers, copying Early Harvest.
Resolve a copy of Early Harvest, untapping basic lands you control.
Activate those lands by tapping them, adding mana.
Resolve the remaining copy of Early Harvest, untapping lands you control.
Activate those lands by tapping them, adding mana.
Activate Ashnod's Altar by sacrificing Emeritus of Abundance, producing that card's result.
Cast the card Regrowth from your hand by paying {1}{G}, targeting Emeritus of Abundance.
Pyromancer Ascension's second ability triggers, copying Regrowth and allowing you to target Early Harvest with the copy.
Resolve both copies of Regrowth, returning Emeritus of Abundance and Early Harvest from your graveyard to your hand.
Cast Early Harvest by paying its mana cost.
Pyromancer Ascension's second ability triggers, copying Early Harvest.
Resolve a copy of Early Harvest, untapping lands you control.
Activate those lands by tapping them, adding mana.
Resolve the remaining copy of Early Harvest, untapping lands you control.
Activate those lands by tapping them, adding mana.
Cast Emeritus of Abundance by paying {2}{G}.
Cast a copy of Regrowth from exile by paying {1}{G}, targeting Early Harvest.
Both of Pyromancer Ascension's abilities trigger.
In response, activate Ashnod's Altar by sacrificing Emeritus of Ideation, producing that card's result.
Resolve Pyromancer Ascension's first abiliity, putting a redundant quest counter on it if desired.
Resolve Pyromancer Ascension's second ability, copying Regrowth and targeting Emeritus of Abundance with the copy.
Repeat from step 18.

Infinite LTB

Infinite death triggers

Infinite sacrifice triggers

Pyromancer Ascension

Ashnod's Altar

Cast Brass's Bounty by paying its mana cost, creating at least nine Treasure tokens.
Activate two of those Treasure tokens by tapping and sacrificing them, adding two mana.
Cast a copy of Regrowth from exile by paying {1}{G}, targeting Brass's Bounty.
Spellweaver Helix's last ability triggers, allowing you to cast the Extra Combat Sorcery, giving you an additional combat phase and an additional main phase this turn.
Resolve the copy of Regrowth, returning Brass's Bounty from your graveyard to your hand.
Declare Emeritus of Abundance as an attacker.
When Emeritus of Abundance attacks, it triggers, becoming prepared.
During your next main phase, activate seven Treasure tokens by tapping and sacrificing them, adding seven mana.
Repeat each main phase.

Cast Brass's Bounty by paying {6}{R}, creating at least eight Treasure tokens.
Activate two of those Treasure tokens by tapping and sacrificing them, adding two mana.
Cast a copy of Regrowth from exile by paying {1}{G}, targeting Brass's Bounty.
Pyromancer's Ascension's first ability triggers, allowing you to put a quest counter on it.
Resolve the copy of Regrowth, returning Brass's Bounty from your graveyard to your hand.
Declare Emeritus of Abundance as an attacker.
When Emeritus of Abundance attacks, it triggers, becoming prepared.
During your second main phase, activate your remaining Treasure tokens by tapping and sacrificing them, adding at least six mana.
Cast a copy of Regrowth by paying {1}{G}, targeting the actual Regrowth card.
Pyromancer Ascension's first ability triggers, allowing you to put a quest counter on it.
Resolve the copy of Regrowth, returning Regrowth from your graveyard to your hand.
Cast Brass's Bounty by paying {6}{R}.
Pyromancer Ascension's second ability triggers, copying Brass's Bounty.
Resolve both copies of Brass's Bounty, creating at least sixteen Treasure tokens.
Activate those Treasure tokens by tapping and sacrificing them, adding at least sixteen mana.
Activate Thermopod by sacrificing Emeritus of Abundance, adding {R}.
Cast the card Regrowth from your hand by paying {1}{G}, targeting Emeritus of Abundance.
Pyromancer Ascension's second ability triggers, copying Regrowth and allowing you to target Brass's Bounty with the copy.
Resolve both copies of Regrowth, returning Emeritus of Abundance and Brass's Bounty from your graveyard to your hand.
Cast Brass's Bounty by paying its mana cost.
Pyromancer Ascension's second ability triggers, copying Brass's Bounty.
Resolve both copies of Brass's Bounty, creating at least sixteen Treasure tokens.
Activate those Treasure tokens by tapping and sacrificing them, adding at least sixteen mana.
Cast Emeritus of Abundance by paying {2}{G}.
Cast a copy of Regrowth from exile by paying {1}{G}, targeting Brass's Bounty.
Both of Pyromancer Ascension's abilities trigger.
In response, activate Thermopod by sacrificing Emeritus of Ideation, adding {R}.
Resolve Pyromancer Ascension's first abiliity, putting a redundant quest counter on it if desired.
Resolve Pyromancer Ascension's second ability, copying Regrowth and targeting Emeritus of Abundance with the copy.
Repeat from step 19.

Thermopod

Combos with "Regrowth"