Emiel the Blessed + Biomancer's Familiar + Swashbuckler Extraordinaire

Emiel the Blessed

Biomancer's Familiar

Swashbuckler Extraordinaire

How it works

1. Activate Emiel the Blessed by paying 1, blinking Swashbuckler Extraordinaire.
2. When Swashbuckler Extraordinaire enters the battlefield, it triggers, creating a Treasure artifact token.
3. Activate the Treasure by tapping and sacrificing it, adding 1.
4. Repeat.

This loop is powered by Biomancer's Familiar, whose static ability reduces the activation cost of Emiel the Blessed down to just a single mana. Because Emiel can blink Swashbuckler Extraordinaire for a mere {1}, every iteration triggers Swashbuckler Extraordinaire to generate a fresh Treasure token. Sacrificing that very same Treasure instantly yields the exact mana needed to pay for the next blink, establishing an endless loop of creature enters-the-battlefield and leaves-the-battlefield triggers.