Felidar Guardian + Machine God's Effigy

Felidar Guardian

Machine God's Effigy

How it works

1. Cast Machine God's Effigy by paying 4.
2. Choose to have Machine God's Effigy enter the battlefield as a copy of Felidar Guardian, except it's an artifact.
3. When Machine God's Effigy enters the battlefield, it triggers, blinking Felidar Guardian.
4. When Felidar Guardian enters the battlefield, it triggers.
5. Holding priority, activate Machine God's Effigy by tapping it, adding .
6. Resolve the Felidar Guardian trigger, blinking Machine God's Effigy.
7. Repeat from step 2.

This clever loop relies on the clever cloning mechanics of Machine God's Effigy, which lets it enter the battlefield as a noncreature artifact copy of Felidar Guardian while still retaining its ability to tap for blue mana. When Felidar Guardian's enters-the-battlefield trigger blinks Machine God's Effigy, the copy resets and immediately triggers anew to blink the real Felidar Guardian right back, allowing you to float a blue mana in response to each iteration. By continuously bouncing each other back and forth, you generate an infinite loop of entry triggers alongside an endless supply of blue mana.