Goblin Welder + Corridor Monitor + Esper Sojourners

Prerequisites

• Goblin Welder does not have summoning sickness.

Steps

1. 1Activate Goblin Welder by tapping it, sacrificing Esper Sojourners and returning Corridor Monitor from your graveyard to the battlefield.
2. 2Esper Sojourners and Corridor Monitor trigger.
3. 3Resolve the Esper Sojourners trigger, untapping Goblin Welder.
4. 4Holding priority, activate Goblin Welder by tapping it, sacrificing Corridor Monitor and returning Esper Sojourners from your graveyard to the battlefield.
5. 5Resolve the Corridor Monitor trigger from step 2, untapping Goblin Welder.
6. 6Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers