Avatar of Growth, and Springheart Nantuko

Prerequisites

• Avatar of Growth on the battlefield
• Springheart Nantuko on the battlefield
• available

Steps

1. Play a land
2. When the land enters, Springheart Nantuko triggers, causing you to pay to create a token copy of Avatar of Growth
3. When the Avatar of Growth token enters, it triggers, causing each player to search their library for up to two basic land cards and put them onto the battefield
4. Search for a Forest and any other basic land
5. When the basic lands enter, Springheart Nantuko triggers twice
6. Holding priority, activate two lands by tapping them, adding
7. Resolve the first Springheart Nantuko trigger, choosing not to pay and creating a 1/1 Insect creature token
8. Resolve the second Springheart Nantuko trigger, causing you to pay to create a token copy of Avatar of Growth Repeat from step 3 until your library contains no basic lands

Results

• Each opponent puts all basic lands from their library onto the battlefield
• Near-infinite creature ETB
• Near-infinite creature tokens
• Near-infinite landfall triggers of all players
• Put all basic lands from your library onto the battlefield tapped