Mystic Sanctuary, Mana Breach, Growth Spiral, and Nissa, Resurgent Animist

Prerequisites

• Mystic Sanctuary on the battlefield
• Mana Breach on the battlefield
• Growth Spiral in hand
• Nissa, Resurgent Animist on the battlefield
• available

Steps

1. Cast Growth Spiral by paying
2. Mana Breach triggers, returning Mystic Sanctuary from the battlefield to your hand
3. Resolve Growth Spiral, causing you to draw a card and put Mystic Sanctuary onto the battlefield from your hand
4. When Mystic Sanctuary enters the battlefield untapped, it and Nissa trigger
5. Resolve the Nissa trigger, adding
6. Resolve the Mystic Sanctuary trigger, returning Growth Spiral from your graveyard to your hand
7. Activate Mystic Sanctuary by tapping it, adding
8. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite storm count
• Near-infinite landfall triggers
• Near-infinite magecraft triggers