Activate Whisperwood Elemental by sacrificing it.
When Whisperwood Elemental dies, Yedora triggers, returning Whisperwood Elemental from your graveyard to the battlefield face-down as a Forest land.
When Whisperwood Elemental enters the battlefield, Zimone triggers.
Holding priority, activate Whisperwood Elemental by tapping it, adding {G}.
Resolve the Zimone trigger, turning Whisperwood Elemental face-up.
Resolve the Whisperwood Elemental ability from step 1.
Repeat.

Infinite LTB

Infinite sacrifice triggers

Infinite death triggers

Infinite green mana

Infinite landfall triggers

Near-infinite ETB

Manifest your entire library

Zimone, Mystery Unraveler

Yedora, Grave Gardener

Whisperwood Elemental

Tap Sunscape Apprentice for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
At the beginning of your end step, Whisperwood Elemental triggers, manifesting Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Infinite turns

Skip your draw step

Wormfang Manta

Sunscape Apprentice

Tap Civic Guildmage for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
At the beginning of your end step, Whisperwood Elemental triggers, manifesting Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Civic Guildmage

Activate Whisperwood Elemental by sacrificing it.
When Whisperwood Elemental dies, Luminous Broodmoth triggers, returning Whisperwood Elemental from your graveyard to the battlefield without a flying counter on it due to Solemnity.
Resolve the Whisperwood Elemental ability.
Repeat.

Infinite ETB

Solemnity

Luminous Broodmoth

Tap Shadow Guildmage for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
At the beginning of your end step, Whisperwood Elemental triggers, manifesting Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Shadow Guildmage

Tap Nightscape Apprentice for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
At the beginning of your end step, Whisperwood Elemental triggers, manifesting Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Combos with "Whisperwood Elemental"