Primal Prayers
Decoction Module
Cavern Harpy

   Prerequisites

What do I need to start this combo?
Cavern Harpy in hand.
Primal Prayers and Decoction Module on the battlefield.
You have at least e or enough mana to cast Cavern Harpy

   Steps

How does this combo work?
1
Cast Cavern Harpy by paying e due to Primal Prayers, if able, or by paying its mana cost.
2
When Cavern Harpy enters the battlefield, it and Decoction Module trigger.
3
Resolve the Decoction Module trigger, causing you to get e.
4
Resolve the Cavern Harpy trigger, returning it from the battlefield to your hand.
5
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite storm count
Yarok, the Desecrated
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Jeweled Lotus
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Mox Opal
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Lands
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Savannah
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Aether Hub
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Plateau
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Scrubland
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Tundra
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Scalding Tarn
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Wooded Foothills
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Bloodstained Mire
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City of Brass
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Blood Crypt
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Stomping Ground
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Mana Confluence
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Woodland Cemetery
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Morphic Pool
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Rejuvenating Springs
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Hinterland Harbor
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