Voltaic Construct + Phyrexian Scriptures + Heronblade Elite

Voltaic Construct

Phyrexian Scriptures

Heronblade Elite

How it works

1. Cause Heronblade Elite to become an artifact using Phyrexian Scriptures.
2. Activate Heronblade Elite by tapping it, adding at least 3.
3. Activate Voltaic Construct by paying 2, untapping Heronblade Elite.
4. Repeat from step 2.

This clever loop hinges on turning Heronblade Elite into an artifact creature with the first chapter of Phyrexian Scriptures, allowing it to become a valid target for Voltaic Construct's untapping ability. Once Heronblade Elite is large enough to tap for more mana than the two required to activate Voltaic Construct, you generate a net positive of colored mana with every single iteration. Meanwhile, the later chapters of Phyrexian Scriptures help clear away opposing threats and grave-based strategies while your mechanical human dps scales into an infinite mana engine.