Shifting Woodland + Aftermath Analyst + Thaumatog + Stone-Seeder Hierophant

Shifting Woodland

Aftermath Analyst

Thaumatog

Stone-Seeder Hierophant

How it works

1. Activate Thaumatog by sacrificing any land except Shifting Woodland.
2. Repeat step 1 until you control no other lands except Shifting Woodland.
3. Activate Shifting Woodland's second ability by paying 2, causing it to become a copy of Aftermath Analyst until end of turn.
4. Activate Shifting Woodland by paying 3 and sacrificing it, returning it and all other land cards from your graveyard to the battlefield tapped.
5. When the lands enter the battlefield, Stone-Seeder Hierophant triggers that many times.
6. Resolve the first trigger, untapping Stone-Seeder Hierophant.
7. Activate Stone-Seeder Hierophant by tapping it, untapping a land.
8. Repeat from step 6 for the remaining triggers.
9. Activate any number of lands by tapping them, adding at least 5.
10. Repeat.

This loop relies on recycling your entire graveyard of lands to continuously trigger a massive wave of untapped mana and landfall triggers. You begin by trimming your land base down to a single copy using Thaumatog, which provides the necessary sacrifice outlet to fuel the engine. Once the graveyard is properly stocked with your sacrificed lands to satisfy the delirium requirement, Shifting Woodland transforms into a copy of Aftermath Analyst. Activating that copied ability lets you sacrifice Shifting Woodland to return every single land in your graveyard straight to the battlefield. Finally, Stone-Seeder Hierophant steps in to untap those newly arrived lands and itself repeatedly through its landfall triggers, generating a surplus of mana to pay for it all and keep the loop spinning infinitely.