Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite +1/+1 counters on a creature
How it works
Activate Kiki-Jiki by tapping it, creating a token copy of Fiend Hunter.
When the Fiend Hunter token enters the battlefield, it triggers, exiling Kiki-Jiki until Fiend Hunter leaves the battlefield.
Activate Phantom Train by sacrificing the Fiend Hunter token.
When the Fiend Hunter token dies, Kiki-Jiki is returned from exile to the battlefield.
Resolve the Phantom Train ability.
Repeat.
This clever loop gets its engine running when Kiki-Jiki, Mirror Breaker taps to create a token copy of Fiend Hunter, whose enters-the-battlefield trigger immediately exiles the goblin shaman. To break the hold and get Kiki-Jiki back, you activate Phantom Train, sacrificing the Fiend Hunter token to put a +1/+1 counter on the train and turn it into a creature. Because the token has left the battlefield, its delayed return trigger fires to bring Kiki-Jiki right back to the table, ready to repeat the entire cycle for an endless stream of sacrifice triggers, creature arrivals, and pumping up your Phantom Train.