Luxurious Locomotive + Ruthless Technomancer + Port Razer + Carrion Feeder + Haste Enabler

Prerequisites

• You control at least seven creatures, excluding Port Razer, that have total power 1 or greater.
• An opponent cannot block and kill Port Razer or Luxurious Locomotive.
• There are at least four card types among cards in your graveyard.
• Haste Enabler

Steps

1. 1Activate Luxurious Locomotive's crew ability by tapping seven creatures you control with total power 1 or greater, causing Luxurious Locomotive to become an artifact creature until end of turn.
2. 2Declare Luxurious Locomotive and Port Raazer as attackers, triggering Luxurious Locomotive, creating at least seven Treasure tokens.
3. 3Deal combat damage using Port Razer, triggering its ability.
4. 4Holding priority, activate Carrion Feeder by sacrificing Port Razer.
5. 5Resolve the Port Razer ability, untapping all creatures you control and causing you to get an additional combat phase after this one.
6. 6Activate three Treasures by tapping and sacrificing them, adding .
7. 7Activate Ruthless Technomancer by paying and sacrificing four Treasures, returning Port Razer from your graveyard to the battlefield.
8. 8Repeat from step 2 each combat phase.

Effects

• Infinite +1/+1 counters on a creature
• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite artifact tokens
• Infinite colored mana
• Infinite combat phases
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mana creatures you control can produce
• Infinite Treasure tokens
• Infinite untap of creatures you control
• Return all creature cards from your graveyard to the battlefield