RMS Titanic, Emry, Lurker of the Loch, and Time Sieve

Prerequisites

• RMS Titanic on the battlefield
• Emry, Lurker of the Loch on the battlefield
• Time Sieve on the battlefield
• each turn available

Steps

1. Activate RMS Titanic's crew ability by tapping any number of creatures with power 3 or greater, causing it to become an artifact creature until end of turn
2. Deal combat damage to an opponent using RMS Titanic, triggering its ability, causing you to sacrifice it and create at least seven Treasure tokens
3. Activate Time Sieve by tapping it and sacrificing five Treasures, causing you to take an extra turn after this one
4. Activate Emry by tapping it, allowing you to cast RMS Titanic from your graveyard this turn
5. Cast RMS Titanic from your graveyard by paying
6. Repeat each turn

Results

• Infinite turns