Kaya, Intangible Slayer, and Felidar Guardian

Prerequisites

• Kaya, Intangible Slayer on the battlefield
• Felidar Guardian on the battlefield
• Kaya has at least four loyalty counters on it

Steps

1. Activate Kaya's third loyalty ability by removing three loyalty counters from it, exiling Felidar Guardian and creating a token copy of it that's a 1/1 Spirit in addition to its other types
2. The Felidar Guardian token enters the battlefield, blinking Kaya
3. Repeat

Results

• Infinite ETB
• Infinite LTB