Springheart Nantuko + Spelunking + Selesnya Sanctuary + Wayward Swordtooth

Springheart Nantuko

Spelunking

Selesnya Sanctuary

Wayward Swordtooth

How it works

1. Play Selesnya Sanctuary. When it enters untapped due to Spelunking, Selesnya Sanctuary and Springheart Nantuko trigger.
2. Holding priority, activate Selesnya Sanctuary by tapping it, adding .
3. Resolve the Selesnya Sanctuary trigger, returning it from the battlefield to your hand.
4. Resolve the Springheart Nantuko trigger, causing you to pay 1 to create a token copy of Wayward Swordtooth.
5. Because of the additional Wayward Swordtooth token, you can play an additional land this turn.
6. Repeat.

This clever loop relies on Spelunking to bypass the usual drawback of Selesnya Sanctuary, ensuring the Karoo-style land enters the battlefield untapped instead of tapped. Each time Selesnya Sanctuary enters, its own bounce trigger returns it to your hand while Springheart Nantuko uses its landfall ability to copy Wayward Swordtooth, fueled by the extra mana produced in the process. Wayward Swordtooth then grants you the extra land drop needed to replay Selesnya Sanctuary right back out, letting you repeat this entire sequence as many times as you like.