RMS Titanic + Muldrotha, the Gravetide + Time Sieve

Prerequisites

• An opponent cannot block RMS Titanic.
• You have not cast an artifact spell using Muldrotha this turn.

Steps

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

Effects

• Infinite turns
• Lock