Prerequisites
- Rona, Herald of Invasion // Rona, Tolarian Obliterator on the battlefield
- Retraction Helix in hand
- Mox Amber on the battlefield
- Rona does not have summoning sickness
Steps
- Activate Mox Amber by tapping it, adding
- Cast Retraction Helix by paying , targeting Rona
- Activate Rona by tapping it, returning Mox Amber from the battlefield to your hand
- Cast Mox Amber by paying
- Rona triggers, untapping itself
- Activate Mox Amber by tapping it, adding one mana of any color among legendary creatures and/or planeswalkers you control
- Repeat from step 3
Results
Required Cards 3
Rona, Herald of Invasion // Rona, Tolarian Obliterator
Legendary Creature — Human Wizard // Legendary Creature — Phyrexian Wizard
Mox Amber
Legendary Artifact