Prototype Portal + Clock of Omens + Battered Golem + Seat of the Synod

Prototype Portal

Clock of Omens

Battered Golem

Seat of the Synod

How it works

1. Activate Prototype Portal by paying 0, creating a token copy of Seat of the Synod.
2. When the Seat of the Synod token enters the battlefield, Battered Golem triggers, untapping itself.
3. Activate Clock of Omens by tapping Battered Golem and the Seat of the Synod token, untapping Prototype Portal.
4. Repeat.

This ingenious loop transforms a simple land-replication engine into an infinite artifact factory by exploiting the clever synergy between your activation costs and untap triggers. With Prototype Portal primed by imprinting Seat of the Synod, you can repeatedly pay zero to spawn land tokens that act as immediate fuel for Clock of Omens. Every time one of those tokens hits the battlefield, Battered Golem eagerly answers the call, untapping itself so you can tap it alongside the newly minted land to reset your Portal and keep the infinite cycle spinning.