Arthur, Marigold Knight + Preston, the Vanisher + Scroll Rack + Felidar Guardian

Prerequisites

• You control another creature that can attack this turn.

Steps

1. 1Activate Scroll Rack by paying and tapping it, exiling Felidar Guardian from your hand face down, then putting the top card of your library into your hand and putting Felidar Guardian onto the top of your library.
2. 2Declare Arthur and another creature as attackers, triggering Arthur, looking at the top six cards of your library and putting Felidar Guardian onto the battlefield tapped and attacking.
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 ETB
• Infinite creature LTB
• 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