Trusty Boomerang + Mana Echoes + Chishiro, the Shattered Blade + Barbarian Class

Trusty Boomerang

Mana Echoes

Chishiro, the Shattered Blade

Barbarian Class

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 turns a simple piece of hardware into an infinite token-generating machine by exploiting the shared type of the creatures it produces. Every time you recast Trusty Boomerang, Chishiro, the Shattered Blade steps in to forge a 2/2 Spirit token, which in turn fuels Mana Echoes to generate enough colorless mana to sustain the cycle. Because the token shares a type with its brethren, Mana Echoes scales its output rapidly while Trusty Boomerang bounces back to your hand via its own activated ability. Though Barbarian Class sits quietly on the battlefield and doesn't directly drive the combo steps, its presence rounds out the strategy by giving your newly minted army haste and extra muscle once you are ready to swing.