RMS Titanic + Muldrotha, the Gravetide + Time Sieve

RMS Titanic

Muldrotha, the Gravetide

Time Sieve

How it works

1. Activate RMS Titanic's crew ability by tapping Muldrotha, causing RMS TItanic 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. Cast RMS Titanic from your graveyard by paying 3.
5. Repeat each turn.