Preston, the Vanisher, Felidar Guardian, and Chord of Calling

Prerequisites

• Preston, the Vanisher on the battlefield
• Felidar Guardian in the library
• Chord of Calling in hand
• at most available

Steps

1. Cast Chord of Calling by paying at most , searching your library for Felidar Guardian and putting it onto the battlefield
2. When Felidar Guardian enters, Felidar Guardian and Preston trigger
3. Resolve the Felidar Guardian trigger, blinking another permanent you control
4. Resolve the Preston trigger, creating a token copy of Felidar Guardian that is a 0/1 Illusion
5. When the Felidar Guardian token enters the battlefield, it triggers, blinking the nontoken Felidar Guardian
6. Repeat from step 2

Results

• Exile all nonland permanents opponents control
• Infinite ETB
• Infinite LTB
• Infinite blinking of permanents
• Infinite creature tokens
• Infinite landfall triggers
• Infinite mana lands you control can produce
• Infinite mana lands you control that enter the battlefield untapped can produce