Agatha's Soul Cauldron + Kiki-Jiki, Mirror Breaker + Lurking Roper + Angelic Chorus

Agatha's Soul Cauldron

Kiki-Jiki, Mirror Breaker

Lurking Roper

Angelic Chorus

How it works

1. Activate Lurking Roper using Kiki-Jiki's ability by tapping it, creating a token copy of itself with haste.
2. When the Lurking Roper token enters the battlefield, Angelic Chorus triggers, causing you to gain life equal to Lurking Roper's toughness.
3. Each Lurking Roper you control triggers, untapping themselves.
4. Repeat.
5. You may also target any nonlegendary creature you control.

To pull off this dizzying loop, Agatha's Soul Cauldron serves as the essential engine, granting Kiki-Jiki, Mirror Breaker's legendary-defying duplication ability to your other creatures once Kiki-Jiki is safely exiled into the Cauldron. With that activated ability now stamped onto Lurking Roper via a +1/+1 counter, the Roper can tap to copy itself over and over again. Every time a new Lurking Roper token arrives, Angelic Chorus steps in to convert its entry into immediate lifegain. That burst of life triggers Lurking Roper's passive untap ability, leaving your copy fresh and ready to tap out for yet another iteration.