Arcbound Reclaimer, Showdown of the Skalds, Elsha of the Infinite, and Lotus Petal

Prerequisites

• Arcbound Reclaimer on the battlefield
• Showdown of the Skalds on the battlefield or in the graveyard
• Elsha of the Infinite on the battlefield
• Lotus Petal in hand or in the library

Steps

1. Cast Lotus Petal either from your hand or from the top of your library by paying Showdown of the Skalds and Elsha's prowess ability trigger
2. Resolve the Showdown of the Skalds trigger, putting a +1/+1 counter on Arcbound Reclaimer
3. Resolve the Elsha trigger, giving it +1/+1 until end of turn
4. Activate Lotus Petal by tapping and sacrificing it
5. Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Lotus Petal from your graveyard onto the top of your library
6. Repeat

Results

• Infinite colored mana
• Infinitely large Elsha of the Infinite until end of turn
• Infinite storm count