Metalworker + Pemmin's Aura + Stonework Packbeast

Metalworker

Pemmin's Aura

Stonework Packbeast

How it works

1. Activate Metalworker by tapping it, causing you to reveal at least two artifact cards from your hand and add at least CCCC.
2. Activate Stonework Packbeast by paying 2, adding .
3. Activate Pemmin's Aura's first ability by paying , untapping Metalworker.
4. Repeat.

This clever loop turns the explosive mana-generation of Metalworker into a bottomless well by leaning on a few key enablers. Since Metalworker produces massive amounts of colorless mana based on the artifacts in your hand, you simply need a way to filter that colorless power into blue mana using Stonework Packbeast's flexible ability. From there, Pemmin's Aura provides the crucial untap mechanism that lets Metalworker reset its tap ability repeatedly, yielding infinite mana of any color.