Agatha's Soul Cauldron + Famished Paladin + Mine Worker

Agatha's Soul Cauldron

Famished Paladin

Mine Worker

How it works

1. Activate Famished Paladin using Mine Worker's ability by tapping it, causing you to gain 1 life.
2. Famished Paladin triggers, untapping itself.
3. Repeat.

This clever engine comes together by using Agatha's Soul Cauldron to grant a creature the activated abilities of an exiled creature card—specifically leveraging Mine Worker's tap ability to gain life. With that life gain hitting the stack, Famished Paladin's passive ability triggers and untaps itself, allowing you to immediately tap it again to repeat the process. Because Agatha's Soul Cauldron also allows you to spend mana as though it were mana of any color, it conveniently ensures all the pieces are fully enabled to loop this infinite lifegain indefinitely.