Eldrazi Displacer + Brood Monitor

Eldrazi Displacer

Brood Monitor

How it works

1. Activate Eldrazi Displacer's ability by paying 2C, blinking Brood Monitor.
2. Brood Monitor enters the battlefield tapped, triggering itself, creating three 1/1 Eldrazi Scion tokens.
3. Activate three Eldrazi Scions by sacrificing them, adding CCC.
4. Repeat.

This charming loop relies on Eldrazi Displacer's ability to repeatedly exile and return another creature to the battlefield. By paying into this activation, you blink Brood Monitor, whose entry triggers the creation of three Eldrazi Scion tokens. Those Scions can immediately be sacrificed for colorless mana to fuel Eldrazi Displacer's next activation, creating a self-sustaining engine. Because Brood Monitor replaces itself with the exact mana needed to keep repeating the process, you generate an endless cascade of enters-the-battlefield, leaves-the-battlefield, and sacrifice triggers.