Skittering Precursor + Sword of the Meek + Weapons Trainer + Umbral Collar Zealot

Skittering Precursor

Sword of the Meek

Weapons Trainer

Umbral Collar Zealot

How it works

1. Activate Umbral Collar Zealot by sacrificing Sword of the Meek.
2. Skittering Precursor triggers, creating a 0/1 Eldrazi Spawn creature token.
3. When the Eldrazi Spawn enters the battlefield as a 1/1 due to Weapons Trainer, Sword of the Meek triggers, returning Sword of the Meek from your graveyard to the battlefield attached to the Eldrazi Spawn.
4. Resolve the Umbral Collar Zealot ability
5. Repeat.

This clever loop transforms simple equipment and artifact recycling into an engine of endless value by letting Umbral Collar Zealot sacrifice Sword of the Meek over and over again. Each time the sword hits the graveyard, Skittering Precursor notices the permanent sacrifice and spawns an Eldrazi token to take its place. Thanks to Weapons Trainer boosting that new token into a 1/1, it immediately satisfies Sword of the Meek's resurrection condition, bringing the equipment right back to the battlefield and priming the cycle to repeat for infinite sacrifice, death, and ETB triggers.