Earthcraft, Felidar Guardian, Kaya the Inexorable, and Phyrexian Altar

Prerequisites

• Earthcraft on the battlefield
• Felidar Guardian on the battlefield
• Kaya the Inexorable on the battlefield
• Phyrexian Altar on the battlefield
• Kaya's loyalty abilities have not been used this turn
• You control at least 1 basic land that can produce

Steps

1. Activate Kaya's +1 loyalty ability to put a Ghostform Counter on Felidar Guardian
2. Tap Felidar Guardian to untap your basic land
3. Tap the basic land for
4. Sacrifice Felidar Guardian to Phyrexian Altar for
5. Felidar Guardian is returned to your hand, and you create a 1/1 Spirit creature token
6. Tap the Spirit to untap your basic land
7. Tap your basic land for Sacrifice the Spirit for
8. Cast Felidar Guardian
9. When Felidar Guardian enters the battlefield, exile Kaya and return her to the battlefield
10. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count