Prowling Geistcatcher, Saffi Eriksdotter, and Blasting Station

Prerequisites

• Prowling Geistcatcher on the battlefield
• Saffi Eriksdotter on the battlefield
• Blasting Station on the battlefield

Steps

1. Activate Saffi by sacrificing it, targeting Prowling Geistcatcher
2. When Saffi dies, Prowling Geistcatcher's first ability triggers, exiling Saffi from your graveyard
3. Resolve the Saffi ability
4. Activate Blasting Station by tapping it and sacrificing Prowling Geistcatcher
5. When Prowling Geistcatcher dies, its second ability and Saffi trigger
6. Resolve the Saffi trigger, returning Prowling Geistcatcher from your graveyard to the battlefield
7. When Prowling Geistcatcher enters the battlefield, Blasting Station triggers, untapping Blasting Station
8. Resolve the Prowling Geistcatcher trigger, returning Saffi from exile to the battlefield
9. When Saffi enters the battlefield, Blasting Station triggers, untapping Blasting Station
10. Resolve the Blasting Station ability from step 4, dealing 1 damage to any target
11. Repeat

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers