Steelswarm Operator + Memnarch + Pemmin's Aura

Prerequisites

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Steps

1. 1Activate Steelswarm Operator's second ability by tapping it, adding that can only be spent to activate abilities of artifacts.
2. 2Activate Memnarch by paying , causing Pemmin's Aura to become an artifact.
3. 3Activate Pemmin's Aura by paying , untapping Steelswarm Operator.
4. 4Activate Steelswarm Operator's second ability by tapping it, adding that can only be spent to activate abilities of artifacts.
5. 5Repeat from step 3.

Effects

• Infinite blue mana that can only be spent to activate abilities of artifacts
• Infinite blue mana that can only be spent to cast artifact spells