Felidar Guardian, and Icewind Stalwart

Prerequisites

• Felidar Guardian on the battlefield
• Icewind Stalwart in hand
• available

Steps

1. Cast Icewind Stalwart by paying
2. When Icewind Stalwart enters the battlefield, it triggers, blinking Felidar Guardian
3. When Felidar Guardian enters the battlefield, it triggers, blinking Icewind Stalwart
4. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB