Preston, the Vanisher + Felidar Guardian + Metamorphosis Fanatic

Prerequisites

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Steps

1. 1Cast Metamorphosis Fanatic by paying its mana cost.
2. 2When Metamorphosis Fanatic enters, it triggers, returning Felidar Guardian from your graveyard to the battlefield.
3. 3When Felidar Guardian enters, it and Preston trigger.
4. 4Resolve the Felidar Guardian trigger, blinking another permanent you control.
5. 5Resolve the Preston trigger, creating a token copy of Felidar Guardian that is a 0/1 Illusion.
6. 6When the Felidar Guardian token enters the battlefield, it triggers, blinking the nontoken Felidar Guardian.
7. 7Repeat from step 3.

Effects

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