Springheart Nantuko, Overlord of the Hauntwoods, Doubling Season, and Spelunking

Prerequisites

• Springheart Nantuko on the battlefield
• Overlord of the Hauntwoods on the battlefield
• Doubling Season on the battlefield
• Spelunking on the battlefield
• Overlord of the Hauntwoods does not have summoning sickness

Steps

1. Declare Overlord of the Hauntwoods as an attacker
2. Overlord of the Hauntwoods triggers, creating two Everywhere land tokens, which enter untapped due to Spelunking When the Everywhere tokens enter the battlefield, Springheart Nantuko trigger twice
3. Holding priority, activate the Everywhere tokens by tapping them, adding
4. Resolve the first Springheart Nantuko trigger, choosing not to pay and creating two 1/1 Insect creature tokens
5. Resolve the second Springheart Nantuko trigger, causing you to pay to create two token copies of Overlord of the Hauntwoods
6. When the Overlord of the Hauntwoods tokens enters the battlefield, they trigger
7. Resolve the first trigger, creating two Everywhere land tokens, which enter untapped due to Spelunking Repeat from step 3

Results

• Infinite ETB
• Infinite creature tokens
• Infinite landfall triggers
• Infinite colored mana
• Infinite Forest tokens
• Infinite Everywhere land tokens
• Infinite Plains tokens
• Infinite Island tokens
• Infinite Mountain tokens
• Infinite Swamp tokens