Yenna, Redtooth Regent, Second Wind, and Estrid's Invocation

Prerequisites

• Yenna, Redtooth Regent on the battlefield
• Second Wind on the battlefield
• Estrid's Invocation on the battlefield

Steps

1. Activate the mana-producing creature by tapping it, adding at least
2. Activate Yenna by paying and tapping it, creating a token copy of Estrid's Invocation
3. Choose to have Estrid's Invocation enter the battlefield as a copy of Second Wind attached to the mana-producing creature
4. Then, untap Yenna and scry 2
5. Activate the Second Wind token's second ability by tapping it, untapping the mana-producing creature
6. Repeat

Results

• Infinite scry 2