Voltaic Construct + Ashnod's Transmogrant + Elvish Aberration

Voltaic Construct

Ashnod's Transmogrant

Elvish Aberration

How it works

1. Cause Elvish Aberration to become an artifact using Ashnod's Transmogrant.
2. Activate Elvish Aberration by tapping it, adding
3. Activate Voltaic Construct by paying 2, untapping Elvish Aberration.
4. Repeat from step 2.

To pull off this explosive green-mana loop, you first need to use Ashnod's Transmogrant to turn your Elvish Aberration into an artifact, seamlessly bridging the gap between creature and machine. Once the Aberration is successfully designated as an artifact in addition to its other types, it can be tapped directly for a massive surge of green mana thanks to its inherent ability. That is where Voltaic Construct enters the equation, using its active ability to untap the transformed Elvish Aberration for a modest mana investment, leaving you with a net profit of green mana on each iteration.