Steelswarm Operator + Encroaching Mycosynth + Pemmin's Aura

Steelswarm Operator

Encroaching Mycosynth

Pemmin's Aura

How it works

1. Activate Steelswarm Operator's second ability by tapping it, adding that can only be spent to activate abilities of artifacts.
2. Activate Pemmin's Aura by paying , untapping Steelswarm Operator.
3. Repeat.

This clever loop transforms Steelswarm Operator into a self-contained engine by leaning on Encroaching Mycosynth, which turns the Operator into an artifact so it can benefit from its own generated mana. With the Operator now an artifact, its second tap ability yields two blue mana specifically restricted to activating artifact abilities. You then funnel one of those blue mana into Pemmin's Aura to untap the Operator, leaving you with a net gain of floating blue mana and an infinite loop of taps and untaps.