Shifting Woodland + Aftermath Analyst + Lotus Cobra + Coastal Hornclaw

Shifting Woodland

Aftermath Analyst

Lotus Cobra

Coastal Hornclaw

How it works

1. Activate Coastal Hornclaw 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, Lotus Cobra triggers that many times, adding for each land that entered the battlefield this way.
6. Repeat.
7. If you control nine or more lands, this combo will net infinite mana due to Lotus Cobra's trigger.