Agatha's Soul Cauldron + Lurking Roper + Temple Elder

Agatha's Soul Cauldron

Lurking Roper

Temple Elder

How it works

1. During your precombat main phase, activate Lurking Roper using Temple Elder's ability by tapping it, causing you to gain 1 life.
2. Lurking Roper triggers, untapping itself.
3. Repeat.

This clever loop lets you turn a humble life-gain engine into an infinite battery. By using Agatha's Soul Cauldron to exile Temple Elder, you grant its tap ability to Lurking Roper, whose own static text dictates that it skips your untap step. Because Temple Elder lets you tap to gain 1 life right on your turn, every activation triggers Lurking Roper to untap itself fresh for the next use. The result is an endless cycle of self-untapping and life generation driven entirely from the graveyard.