Activate the Forest by tapping it, adding {G}.
Activate Kamahl's first ability by paying {1}{G}, causing the Forest to become a 1/1 Elemental until end of turn.
Activate Ashnod's Altar by sacrificing the Forest, adding {C}{C}.
When the Forest dies, Yedora triggers, returning the Forest land from your graveyard to the battlefield face down as a Forest land.
Repeat.

Infinite colorless mana

Infinite death triggers

Infinite landfall triggers

Infinite creature LTB

Infinite creature sacrifice triggers

Yedora, Grave Gardener

Kamahl, Heart of Krosa

Ashnod's Altar

Animate a Forest that enters untapped using Kamahl
Cast Springheart Nantuko for its bestow cost by paying {1}{G}, attaching it to the animated Forest.
Play a land. When the land enters, Springheart Nantuko triggers, causing you to pay {1}{G} to create two token copies of the Forest that enters untapped.
When the Forest tokens enter, Springheart Nantuko triggers twice.
Holding priority, activate the Forest tokens by tapping them, adding {G}{G}.
Resolve the first Springheart Nantuko trigger, choosing not to pay and creating two 1/1 Insect creature tokens.
Resolve the second Springheart Nantuko trigger, causing you to pay {1}{G} to create two token copies of the Forest that enters untapped.
Repeat from step 4.

Infinite creature ETB

Infinite creature tokens

Infinite tapped Forest tokens

Springheart Nantuko

Doubling Season

Activate Phyrexian Altar by sacrificing a nontoken creature, adding {1}.
The creature dies, triggering Yedora, returning the creature from your graveyard to the battlefield face-down as a Forest land.
Activate the creature by tapping it, adding {G}.
Activate Kamahl by paying {1}{G}, causing the creature to become a 1/1 Elemental that is still a land until end of turn.
Repeat.

Phyrexian Altar

Activate Kamahl by paying {1}{G}, causing Minamo to become a 1/1 Elemental creature with vigilance, indestructible and haste that's still a land until end of turn.
Activate Arixmethes by tapping it, adding {G}{U}.
Activate Minamo's second ability by paying {U} and tapping it, untapping Ioreth of the Healing House.
Activate Ioreth of the Healing House's second ability by tapping it, untapping Minamo and Arixmethes.
Repeat from step 2.

Infinite green mana

Ioreth of the Healing House

Arixmethes, Slumbering Isle

Minamo, School at Water's Edge

Activate a Forest by tapping it, adding {G}.
Activate Kamahl by paying {1}{G}, causing the Forest to become a 1/1 Elemental that is still a land until end of turn.
Activate Squandered Resources by sacrificing the Forest, adding {G}.
The Forest dies, triggering Yedora, returning the Forest from your graveyard to the battlefield face-down as a Forest land.
Repeat.

Squandered Resources

Pay {1}{G} to Kamahl, targeting the basic land.
Tap the basic land with Earthcraft, untapping itself.
Mesmeric Orb triggers milling you 1.
Repeat.

Infinite self-mill

Earthcraft

Mesmeric Orb

Activate Kamahl by paying {1}{G}, causing Grove of the Burnwillows to become a creature until end of turn.
Activate Marvin using Grove of the Burnwillows' second ability by tapping it, adding {R} or {G} and causing each opponent to lose 1 life due to Tainted Remedy.
Activate Marvin using Pili-Pala's ability by paying {2} and untapping it, adding {1}.
Repeat from step 2.

Infinite lifeloss

Grove of the Burnwillows

Pili-Pala

Marvin, Murderous Mimic

Tainted Remedy

Pay {1}{G} to Kamahl, targeting the basic land.
Tap the fortified land with Earthcraft, untapping itself.
Darksteel Garrison triggers giving any creature +1/+1 until end of turn.
Repeat.

Infinitely large creatures

Darksteel Garrison

Animate the land that has Squirrel Nest attached using Kamahl.
Activate the land with Squirrel Nest attached by tapping it, creating a 1/1 Squirrel creature token.
When the Squirrel enters, Intruder Alarm triggers, untapping all creatures.
Repeat from step 2.

Infinite mana creatures you control can produce

Infinite untap of creatures

Squirrel Nest

Intruder Alarm

Activate Kamahl by paying {1}{G}, causing the land with Tarmogoyf Nest attached to become a creature until end of turn.
Activate any number of creatures you control by tapping them, adding at least {1}{G}.
Activate the land with Tarmogoyf Nest attached by paying {1}{G} and tapping it, creating a Tarmogoyf creature token.
When the Tarmogoyf enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Repeat from step 2.

Tarmogoyf Nest

Pay {1}{G} to Kamahl, targeting the basic land.
Tap the basic land with Earthcraft, untapping itself.
Wake Thrasher triggers getting +1/+1 until end of turn.
Repeat.

Infinitely large creature until end of turn

Wake Thrasher

During your precombat main phase, use Contagion Clasp to put an additional eon counter on Magosi.
Activate Magosi's third ability by tapping it, removing an eon counter from it and returning it from the battlefield to your hand.
When Magosi leaves the battlefield, The Ozolith's first ability triggers due to Kamahl, putting an eon counter on The Ozolith.
Resolve the Magosi ability, causing you to take an extra turn after this one.
Play Magosi.
At the beginning of your combat phase, The Ozolith triggers, moving an eon counter from itself onto Magosi.
Repeat each turn.

Combos with "Kamahl, Heart of Krosa"