Brain Freeze, Black Lotus, and Underworld Breach

Prerequisites

• Brain Freeze in the graveyard
• Black Lotus on the battlefield
• Underworld Breach on the battlefield

Steps

1. Activate Black Lotus by tapping and sacrificing it, adding
2. Cast Brain Freeze from your graveyard for its escape cost by paying and exiling three other cards from your graveyard, ensuring not to exile Black Lotus
3. Choose to have Brain Freeze target yourself
4. Brain Freeze's storm ability triggers, copying it for each spell you've cast before it this turn
5. Choose to have the first copy target yourself, and all other copies can target any player you desire
6. Resolve all Brain Freeze copies, causing you to mill three cards and then the other targeted players to mill cards
7. Resolve the original Brain Freeze, causing you to mill three cards
8. Cast Black Lotus from your graveyard for its escape cost by paying and exiling three other cards from your graveyard, ensuring not to exile Brain Freeze
9. Repeat

Results

• Infinite self-mill
• Near-infinite colored mana
• Near-infinite magecraft triggers
• Near-infinite mill
• Near-infinite storm count