Voltaic Construct + Phyrexian Scriptures + Karametra's Acolyte

Voltaic Construct

Phyrexian Scriptures

Karametra's Acolyte

How it works

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

By utilizing the first chapter ability of Phyrexian Scriptures, you can transform Karametra's Acolyte into an artifact creature, setting the stage for a clever mechanical loop. Once it bears this artifact type, Voltaic Construct can target it with its untap ability for the low cost of two mana. As long as your devotion to green yields enough mana from Karametra's Acolyte to cover that activation cost with plenty to spare, you can cycle between tapping for massive green mana and paying to untap, generating an infinite supply of green mana to fuel whatever devastating spells you hold in hand.