Mystic Sanctuary, Mana Breach, Growth Spiral, and Tireless Provisioner

Prerequisites

• Mystic Sanctuary on the battlefield
• Mana Breach on the battlefield
• Growth Spiral in hand
• Tireless Provisioner on the battlefield
• You control at least three other Islands
• 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 Tireless Provisioner's second ability trigger
5. Resolve the Tireless Provisioner trigger, creating a Treasure token
6. Resolve the Mystic Sanctuary trigger, returning Growth Spiral from your graveyard to your hand
7. Activate Mystic Sanctuary by tapping it, adding
8. Activate the Treasure by tapping and sacrificing it, adding
9. Repeat

Results

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