Gemstone Array + Power Artifact + Vorinclex, Monstrous Raider

Gemstone Array

Power Artifact

Vorinclex, Monstrous Raider

How it works

1. Activate Gemstone Array's first ability by paying 1, putting two charge counters on it.
2. Activate Gemstone Array's second ability by removing a charge counter from it, adding 1.
3. Repeat.

This clever loop relies on Power Artifact to drastically discount the activation cost of Gemstone Array down to just a single mana. Normally, storing energy in Gemstone Array would be a losing financial proposition, but Vorinclex, Monstrous Raider steps in as the catalyst to double every charge counter you put on it. Because Vorinclex ensures you receive two counters for every one you pay to store, you can endlessly filter your mana, siphon off a profit, and generate infinite colored mana along with infinite charge counters.