Shifting Woodland + Aftermath Analyst + Lithatog + Archelos, Lagoon Mystic

Shifting Woodland

Aftermath Analyst

Lithatog

Archelos, Lagoon Mystic

How it works

1. Activate Lithatog 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 untapped due to Arcehlos
5. Activate any number of lands by tapping them, adding at least 5.
6. Repeat.

This clever loop relies on turning your land into a recursive engine and bending the rules of how permanents enter the battlefield. By sacrificing your other lands to Lithatog to fuel its activation costs, you empty your board so Shifting Woodland can safely copy Aftermath Analyst in your graveyard using its delirium ability. Once transformed, you cash in Shifting Woodland's own sacrifice ability to bring every land back—and because Archelos, Lagoon Mystic is thankfully sitting there untapped, all of those returned lands stream straight onto the battlefield untaxed and ready to tap for massive amounts of mana.