Codex Shredder + Open the Vaults + Time Sieve

Mana needed: {9}{W}{W} each turn

WUB identity

Commander legal

The 3 combo pieces

What must be in place

You control at least four additional nontoken artifacts.

How to execute it

  1. Activate Time Sieve by tapping it and sacrificing it and four other nontoken artifacts except Codex Shredder, causing you to take an extra turn after this one.
  2. If Open the Vaults is in your graveyard, activate Codex Shredder's second ability by paying {5}, tapping and sacrificing it, returning Open the Vaults from your graveyard to your hand.
  3. Cast Open the Vaults by paying {4}{W}{W}, returning all artifact and enchantment cards from all graveyards onto the battlefield under their owner's control.
  4. Repeat each turn.

What the combo produces