Activate Gaea's Cradle and another land by tapping them, adding at least {G}{G}{G}
Cast Constant Mists with buyback by paying {1}{G} and sacrificing a land that wasn't tapped for mana in step 1.
Toph's second ability triggers, earthbending Gaea's Cradle
Resolve Constant Mists, returning it to your hand.
Cast Constant Mists with buyback by paying {1}{G} and sacrificing Gaea's Cradle.
Toph triggers twice. Resolve the first trigger, earthbending another land you control.
Resolve the second Toph trigger, returning Gaea's Cradle from your graveyard to the battlefield tapped.
When Gaea's Cradle enters, Amulet of Vigor triggers, untapping Gaea's Cradle.
Resolve Constant Mists, returning it to your hand.
Activate Gaea's Cradle by tapping it, adding at least {G}{G}{G}.
Cast Constant Mists with buyback by paying {1}{G} and sacrificing the land that was earthbent in step 6.
Toph triggers twice. Resolve the first trigger, earthbending Gaea's Cradle.
Resolve the second Toph trigger, returning the sacrificed land from your graveyard to the battlefield tapped.
When the land enters, Amulet of Vigor triggers, untapping the land.
Resolve Constant Mists, returning it to your hand.
Activate the land that entered by tapping it adding at least {1}.
Repeat from step 5.

Infinite storm count

Infinite mana lands you control can produce

Infinite green mana

Infinite magecraft triggers

Infinite landfall triggers

Toph, Hardheaded Teacher

Gaea's Cradle

Constant Mists

Amulet of Vigor

Activate Gaea's Cradle and another land by tapping them, adding at least {G}{G}{G}
Cast Constant Mists with buyback by paying {1}{G} and sacrificing a land that wasn't tapped for mana in step 1.
Toph's second ability triggers, earthbending Gaea's Cradle
Resolve Constant Mists, returning it to your hand.
Cast Constant Mists with buyback by paying {1}{G} and sacrificing Gaea's Cradle.
Toph triggers twice. Resolve the first trigger, earthbending another land you control.
Resolve the second Toph trigger, returning Gaea's Cradle from your graveyard to the battlefield untapped due to Spelunking
Resolve Constant Mists, returning it to your hand.
Activate Gaea's Cradle by tapping it, adding at least {G}{G}{G}.
Cast Constant Mists with buyback by paying {1}{G} and sacrificing the land that was earthbent in step 6.
Toph triggers twice. Resolve the first trigger, earthbending Gaea's Cradle.
Resolve the second Toph trigger, returning the sacrificed land from your graveyard to the battlefield untapped due to Spelunking.
Resolve Constant Mists, returning it to your hand.
Activate the land that entered by tapping it adding at least {1}.
Repeat from step 5.

Infinite card draw

Infinite draw triggers

Spelunking

Cast Etali either from your hand or the command zone by paying {5}{R}{R} plus commander tax if applicable.
When Etali enters, it triggers.
Holding priority, activate Phyrexian Altar by sacrificing Etali.
When Etali dies, Yedora triggers, returning Etali from your graveyard to the battlefield face-down as a Forest land.
Holding priority, activate Etali by tapping it, adding {G}.
Resolve the Etali trigger from step 2, exiling cards from the top of each library until each player has exiled a nonland card, and causing you to cast any number of those cards without paying its mana cost.
For each card cast, Toph's second ability triggers once.
Resolve the first Toph trigger, earthbending Etali.
Resolve any remaining triggers, earthbending any other lands you desire. If you do not want to earthbend other lands, target Etali with all remaining triggers.
Activate Phyrexian Altar by sacrificing Etali.
When Etali dies, Toph and Yedora trigger.
Resolve the Yedora trigger, choosing not to return Etali.
Resolve the Toph trigger, returning Etali from your graveyard to the battlefield tapped.
Repeat from step 2.

Cast all spells in your library

Cast any number of spells from opponents' libraries

Exile all libraries

Near-infinite ETB

Near-infinite LTB

Near-infinite colored mana

Near-infinite death triggers

Near-infinite landfall triggers

Near-infinite magecraft triggers

Near-infinite recursion of lands you control

Near-infinite sacrifice triggers

Near-infinite storm count

Etali, Primal Conqueror // Etali, Primal Sickness

Yedora, Grave Gardener

Phyrexian Altar

Cast any spell by paying {0} due to Jodah and Aang, Master of Elements.
Toph triggers, earthbending a land.
Auton Soldier triggers, causing you to reveal cards from the top of your library until you reveal a nonland card and put it into your hand due to Abundance.
Resolve the spell cast in step 1, and repeat from step 1 as able.

Avatar Aang // Aang, Master of Elements

Abundance

Jodah, Archmage Eternal

Auton Soldier

Combos with "Toph, Hardheaded Teacher"