Whirler Virtuoso + Decoction Module + Echo Storm

Whirler Virtuoso

Decoction Module

Echo Storm

How it works

1. Cast Echo Storm by paying 3, targeting Decoction Module.
2. Echo Storm triggers, creating at least one copy of Echo Storm, with one copy targeting Decoction Module.
3. Resolve all Echo Storms, causing you to create two token copies of Decoction Module.
4. Activate Whirler Virtuoso by paying EEE, creating a 1/1 Thopter artifact creature token.
5. When the Thopter enters the battlefield, each Decoction Module triggers, causing you to get EEE.
6. Repeat from step 4.