Doppelgang, Mystic Sanctuary, and Commander's Sphere

Prerequisites

• Doppelgang in hand
• Mystic Sanctuary on the battlefield
• Commander's Sphere on the battlefield
• You control at least two additional Islands
• You control at least two additional permanents that enter the battlefield untapped and can collectively tap to produce at least if the two additional Islands enter the battlefield tapped
• available

Steps

1. Cast Doppelgang by paying , creating four token copies of Mystic Sanctuary, Commander's Sphere, and two other permanents that enter the battlefield untapped and can collectively tap to produce at least
2. When the Mystic Sanctuary tokens enter the battlefield untapped, they trigger, putting Doppelgang on top of your library from your graveyard
3. Activate a Commander's Sphere token's second ability by sacrificing it, causing you to draw Doppelgang
4. Activate the four Mystic Sanctuary tokens by tapping them, adding
5. Activate the three Commander's Sphere tokens' first abilities by tapping them, adding
6. Activate seven of the other permanent tokens created in step 1 by tapping them, adding at least
7. Repeat

Results

• Infinite storm count
• Infinite card draw
• Infinite blue mana
• Infinite draw triggers
• Infinite magecraft triggers
• Infinite landfall triggers
• Infinite copies of any permanent on the battlefield
• Infinite mana permanents can produce
• Infinite Island tokens