Omnath, Locus of the Roil + Ashaya, Soul of the Wild + The Locust God + Cloudstone Curio + Shield Sphere

Omnath, Locus of the Roil

Ashaya, Soul of the Wild

The Locust God

Cloudstone Curio

Shield Sphere

How it works

1. Cast Shield Sphere by paying 0.
2. When Shield Sphere 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 Shield Sphere from the battlefield to your hand.
5. Repeat.

This delightful engine harnesses Ashaya, Soul of the Wild to turn every creature you control into a Forest land, allowing them to happily trigger Cloudstone Curio whenever a new creature enters the battlefield. By playing Shield Sphere for zero mana, you trigger Omnath, Locus of the Roil's landfall ability (since your creatures are now lands, too) to draw a card, which in turn prompts The Locust God to spawn a hasty Insect token. That new Insect lets Cloudstone Curio bounce the Shield Sphere right back to your hand, setting you up to recast the Sphere and repeat the loop infinitely for massive card draw, endless triggers, and an overwhelming horde of bugs.