Underworld Breach + Frantic Search + Brain Freeze + High Tide

Prerequisites

• You have at least three other cards in your graveyard.
• You control at least three Islands.

Steps

1. 1Cast High Tide by paying .
2. 2Activate up to three Islands by tapping them, adding .
3. 3High Tide triggers three times, adding .
4. 4Cast Brain Freeze for its escape cost by paying and exiling three other cards from your graveyard.
5. 5Brain Freeze's storm ability triggers, copying Brain Freeze for each spell you've cast before it this turn, with one copy targeting you and all remaining copies targeting any player(s).
6. 6Resolve all Brain Freezes, causing you to mill six cards, and each player to mill three cards for each Brain Freeze that targeted them.
7. 7Cast Frantic Search for its escape cost by paying and exiling three other cards from your graveyard, causing you to loot twice and untap three Islands.
8. 8Repeat.
9. 9Once you have milled your entire library, you may use the remaining to cast Brain Freeze repeatedly targeting your opponents.

Effects

• Near-infinite blue mana
• Near-infinite draw triggers
• Near-infinite looting
• Near-infinite magecraft triggers
• Near-infinite mill
• Near-infinite self-discard triggers
• Near-infinite self-mill
• Near-infinite storm count