All 171 Combos with Lumra, Bellow of the Woods

Lumra, Bellow of the Woods + Springheart Nantuko + Zuran Orb + Lotus Cobra

Infinite Mill: Infinite LTB, Infinite ETB, Infinite death triggers, Infinite self-mill, Infinite lifegain triggers, Infinite lifegain, Infinite landfall triggers, Infinite mana lands you control can produce, Infinite colored mana, Put all lands from your library and graveyard onto the battlefield tapped, Infinite untap of lands you control

Play any land. When the land enters the battlefield, Springheart Nantuko triggers. Holding priority, activate Zuran Orb by sacrificing a land. Repeat step 3 until you control no lands. Resolve the Springheart Nantuko trigger, causing you to pay {1}{G} to create a token copy of Lumra. Put the token Lumra into your graveyard due to the legend rule. The Lumra token's enter-the-battlefield ability triggers, causing you to mill four cards and returning all lands from your graveyard to the battlefield. When the lands enter the battlefield, Springheart Nantuko and Lotus Cobra trigger that many times. Resolve all Lotus Cobra triggers, adding {G} for each trigger. Resolve all but one Springheart Nantuko trigger, choosing not to pay and creating that many 1/1 Insect creature tokens. Repeat from step 3.