Whirler Virtuoso + Decoction Module + Astral Dragon

Whirler Virtuoso

Decoction Module

Astral Dragon

How it works

1. Cast Astral Dragon by paying 6.
2. When Astral Dragon enters the battlefield, it and Decoction Module trigger.
3. Resolve the Decoction Module trigger, causing you to get E.
4. Resolve the Astral Dragon trigger, causing you to create two token copies of Decoction Module that are 3/3 Dragons in addition to their other types.
5. When the Decoction Module tokens enter the battlefield, each Decoction Module triggers twice, causing you to get six E.
6. Activate Whirler Virtuoso by paying EEE, creating a 1/1 Thopter artifact creature token.
7. When the Thopter enters the battlefield, each Decoction Module triggers, causing you to get EEE.
8. Repeat from step 6.