Omnath, Locus of the Roil + Ashaya, Soul of the Wild + The Locust God + Cloudstone Curio + Phyrexian Walker

Omnath, Locus of the Roil

Ashaya, Soul of the Wild

The Locust God

Cloudstone Curio

Phyrexian Walker

How it works

1. Cast Phyrexian Walker by paying 0.
2. When Phyrexian Walker enters the battlefield, Omnath's second ability triggers, putting a +1/+1 counter on an Elemental you control and drawing a card.
3. The Locust God triggers, creating a 1/1 Insect creture token with flying and haste.
4. When the Insect enters the battlefield, Cloudstone Curio triggers, returning Phyrexian Walker from the battlefield to your hand.
5. Repeat.

This clever loop turns zero-mana creatures into an entire ecosystem of triggers, beginning the moment you cast Phyrexian Walker for free. Because Ashaya, Soul of the Wild turns all your nontoken creatures into Forests, every creature that enters the battlefield also counts as a land to trigger Omnath, Locus of the Roil's landfall ability, which draws you a card when you cross the threshold of eight lands. That newly drawn card instantly excites The Locust God to churn out an Insect token, whose arrival trips Cloudstone Curio to bounce your original Phyrexian Walker right back to your hand for another round.