Extravagant Replication + Time Walk + Shipwreck Dowser

Extravagant Replication

Time Walk

Shipwreck Dowser

How it works

1. Cast Time Walk by paying its mana cost, causing you to take an extra turn after this one.
2. Move to your next turn.
3. At the beginning of your upkeep, Extravagant Replication triggers, creating a token copy of Shipwreck Dowser.
4. When the Shipwreck Dowser token enters the battlefield, it triggers, returning Time Walk from your graveyard to your hand.
5. Repeat.

This elegant Vintage-legal engine leverages Extravagant Replication to permanently break the laws of time. Each upkeep, the enchantment churns out a fresh token copy of Shipwreck Dowser, whose entrance ability plucks Time Walk right back out of your graveyard. Because Time Walk grants you an extra turn, you simply repeat this upkeep loop indefinitely, casting the sorcery every single turn while your ever-growing army of Shipwreck Dowser tokens dominates the board.