Six + Scrap Trawler + Chromatic Sphere + Herald of Kozilek

Six

Scrap Trawler

Chromatic Sphere

Herald of Kozilek

How it works

1. Cast Chromatic Sphere from your graveyard by paying 0 and discarding an artifact land card from your hand.
2. Activate Chromatic Sphere by paying 1, tapping and sacrificing it, adding 1 and causing you to draw a card.
3. Scrap Trawler triggers, returning an artifact land card from your graveyard to your hand.
4. Repeat.

This intricate loop turns Six into an engine of continuous recycling, granting nonland permanents in your graveyard retrace so you can repeatedly cast Chromatic Sphere by discarding the artifact land you just retrieved. Scrap Trawler keeps the cycle closed by returning that discarded land to your hand every time Chromatic Sphere hits the graveyard from the battlefield, while Herald of Kozilek provides crucial cost reduction to make the loop mana-neutral and sustain your infinite card draw.