Voltaic Construct + Karametra's Acolyte + The Flesh Is Weak

Voltaic Construct

Karametra's Acolyte

The Flesh Is Weak

How it works

1. Activate Karametra's Acolyte by tapping it, adding at least .
2. Activate Voltaic Construct by paying 2, untapping Karametra's Acolyte.
3. Repeat

This clever loop transforms your board into a powerhouse of green mana by exploiting a subtle type-changing effect. When The Flesh Is Weak enters the battlefield, its static ability grants +1/+1 counters to your creatures while instantly turning those modified creatures into artifacts in addition to their other types. This crucial transformation allows the otherwise non-artifact Karametra's Acolyte to qualify as an artifact creature, making it a legal target for Voltaic Construct. Once the Acolyte taps to produce massive amounts of green mana based on your devotion, you simply funnel a portion of that mana back into Voltaic Construct to untap her, fueling an endless cycle of infinite green mana and infinite untaps.