Shifting Woodland + Aftermath Analyst + Nissa, Resurgent Animist + Troubled Healer

Shifting Woodland

Aftermath Analyst

Nissa, Resurgent Animist

Troubled Healer

How it works

1. Activate Troubled Healer 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, Nissa 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 Nissa's trigger.