Trusty Boomerang + Mana Echoes + Urabrask the Hidden + Chishiro, the Shattered Blade

Trusty Boomerang

Mana Echoes

Urabrask the Hidden

Chishiro, the Shattered Blade

How it works

1. Cast Trusty Boomerang by paying 1.
2. When Trusty Boomerang enters, Chishiro's triggers, creating a 2/2 Spirit creature token.
3. When the Spirit enters, Mana Echoes triggers, adding C for each Spirit you control.
4. Activate Trusty Boomerang's equip ability by paying 1, attaching it to the Spirit token.
5. Activate the Spirit by paying 1 and tapping it, tapping a creature and returning Trusty Boomerang from the battlefield to your hand.
6. Repeat.

This loop relies on turning a single piece of hardware into a self-sustaining manufacturing line, fueled by the recursive synergy between Chishiro, the Shattered Blade and Mana Echoes. Each iteration begins when you cast Trusty Boomerang, prompting Chishiro to forge a 2/2 Spirit token whose arrival immediately expands your colorless mana reserves via Mana Echoes. Urabrask the Hidden ensures the newly minted token enters the battlefield ready to act, granting it haste so it can immediately pick up the equipment and use Trusty Boomerang's activated ability to bounce the artifact back to your hand. By repeating this cycle, you continuously generate colorless mana and an endless army of menacing spirits, creating a staggering storm count along the way.