Soulfire Grand Master, and Mana Geyser

Prerequisites

• Soulfire Grand Master on the battlefield
• Mana Geyser in hand
• undefined available

Steps

1. Activate Soulfire Grand Master by paying , causing you to put the next instant or sorcery card you cast from your hand this turn into your hand as it resolves
2. Cast Mana Geyser by paying , adding for each tapped land opponents control and returning Mana Geyser to your hand
3. Repeat

Results

• Infinite storm count
• Infinite red mana
• Infinite magecraft triggers