Preston, the Vanisher + Felidar Guardian + Chord of Calling
Preston, the Vanisher
Felidar Guardian
Chord of Calling
Exile all nonland permanents opponents controlInfinite creature ETBInfinite creature LTBInfinite blinking of permanentsInfinite creature tokensInfinite landfall triggersInfinite mana lands you control can produceInfinite mana lands you control that enter the battlefield untapped can produce
How it works
Cast Chord of Calling by paying at most 4, searching your library for Felidar Guardian and putting it onto the battlefield.
When Felidar Guardian enters, Felidar Guardian and Preston trigger.
Resolve the Felidar Guardian trigger, blinking another permanent you control.
Resolve the Preston trigger, creating a token copy of Felidar Guardian that is a 0/1 Illusion.
When the Felidar Guardian token enters the battlefield, it triggers, blinking the nontoken Felidar Guardian.