Doppelgang + Mystic Sanctuary + Commander's Sphere

Prerequisites

• 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.

Steps

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

Effects

• Infinite blue mana
• Infinite card draw
• Infinite copies of all permanents
• Infinite draw triggers
• Infinite Island tokens
• Infinite landfall triggers
• Infinite magecraft triggers
• Infinite mana permanents you control can produce
• Infinite storm count