Dockside Extortionist, Twilight Shepherd, and Ashnod's Altar

Prerequisites

• Dockside Extortionist on the battlefield
• Twilight Shepherd on the battlefield
• Ashnod's Altar on the battlefield
• Opponents control at least three artifacts and/or enchantments
• Twilight Shepherd does not have a -1/-1 counter on it
• available

Steps

1. Activate Ashnod's Altar by sacrificing Twilight Shepherd, adding
2. Twilight Shepherd dies, triggering its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Twilight Shepherd enters the battlefield, triggering its ability
4. Holding priority, activate Ashnod's Altar twice by sacrificing Twilight Shepherd and Dockside Extortionist, adding
5. Resolve the Twilight Shepherd trigger, returning to your hand all cards that were put into your graveyard this turn
6. Cast Dockside Extortionist by paying
7. Dockside Extortionist enters the battlefield, creating at least three Treasure tokens
8. Activate the three Treasure tokens by tapping and sacrificing them, adding
9. Activate Ashnod's Altar by sacrificing Dockside Extortionist, adding
10. Cast Twilight Shepherd by paying
11. Twilight Shepherd enters the battlefield, returning to your hand all cards that were put into your graveyard this turn
12. Cast Dockside Extortionist by paying
13. Dockside Extortionist enters the battlefield, creating at least three Treasure tokens
14. Activate two Treasure tokens by tapping and sacrificing them, adding
15. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count
• Infinite Treasure tokens