Rona, Herald of Invasion // Rona, Tolarian Obliterator, Banishing Knack, and Mox Amber

Prerequisites

• Rona, Herald of Invasion // Rona, Tolarian Obliterator on the battlefield
• Banishing Knack in hand
• Mox Amber on the battlefield
• Rona does not have summoning sickness

Steps

1. Activate Mox Amber by tapping it, adding
2. Cast Banishing Knack by paying , targeting Rona
3. Activate Rona by tapping it, returning Mox Amber from the battlefield to your hand
4. Cast Mox Amber by paying
5. Rona triggers, untapping itself
6. Activate Mox Amber by tapping it, adding one mana of any color among legendary creatures and/or planeswalkers you control
7. Repeat from step 3

Results

• Infinite mana among colors of legendary creatures and planeswalkers you control
• Infinite storm count