Throne of Eldraine + Vesuvan Duplimancy + Whim of Volrath

Prerequisites

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Steps

1. 1Activate Throne of Eldraine by tapping it, adding that can only be spent to cast monoblue spells.
2. 2Cast Whim of Volrath with buyback by paying , targeting Throne of Eldraine.
3. 3Vesuvan Duplimancy triggers, creating a nonlegendary token copy of Throne of Eldraine. Choose "Blue" as the token enters.
4. 4Resolve Whim of Volrath, returning it to your hand.
5. 5Repeat, tapping the Throne of Eldraine token instead.

Effects

• Infinite colored mana that can only be spent to cast monocolored spells
• Infinite magecraft triggers
• Infinite storm count