Life and Limb, Maskwood Nexus, and Zendikar's Roil

Prerequisites

• Life and Limb on the battlefield
• Maskwood Nexus on the battlefield
• Zendikar's Roil on the battlefield
• You have a land card in hand

Steps

1. Play any land from your hand
2. The land enters the battlefield, triggering Zendikar's Roil, creating a 2/2 Elemental creature token
3. The Elemental enters the battlefield as a Saproling due to Maskwood Nexus, which also causes it to be a Forest land due to Life and Limb
4. Zendikar's Roil triggers, creating a 2/2 Elemental creature token
5. Repeat from step 3

Results

• Infinite creature tokens
• Infinite ETB
• Infinite landfall triggers