Doomsday, Commander's Sphere, Bolas's Citadel, Aetherflux Reservoir, and Black Sun's Zenith

Prerequisites

• Doomsday in hand
• Commander's Sphere on the battlefield
• Bolas's Citadel in the graveyard or in the library
• Aetherflux Reservoir in the graveyard or in the library
• Black Sun's Zenith in the graveyard or in the library
• You have at least 11 life
• available

Steps

1. Cast Doomsday by paying , searching your library and graveyard for Bolas's Citadel, Aetherflux Reservoir, two other cards with mana value 2 or less, and Black Sun's Zenith, and then placing the remaining cards on top of your library in the order previously listed and losing half your life, rounded up
2. Activate Commander's Sphere's first ability by tapping it, adding one mana of any color
3. Activate Commander's Sphere's second ability by sacrificing it, causing you to draw a card
4. Cast Bolas's Citadel by paying
5. Cast Aetherflux Reservoir from your library by paying 4 life
6. Cast two other cards with mana value 2 or less
7. Aetherflux Reservoir triggers, gaining you 1 life for each spell you have cast this turn
8. Cast Black Sun's Zenith by paying 2 life and shuffling it into the library
9. Aetherflux Reservoir triggers, gaining you 1 life for each spell you have cast this turn
10. Repeat until your life total is 53 or greater
11. Activate Aetherflux Reservoir by paying 50 life, dealing 50 damages to any target
12. Repeat from step 8

Results

• Infinite damage
• Infinite lifegain
• Infinite lifegain triggers
• Infinite storm count