Lion's Eye Diamond, Brought Back, Eternal Witness, and Blasting Station

Prerequisites

• Lion's Eye Diamond on the battlefield
• Brought Back in hand or in the graveyard
• Eternal Witness in hand
• Blasting Station on the battlefield
• available

Steps

1. Cast Eternal Witness by paying
2. When Eternal Witness enters the battlefield, it triggers itself and Blasting Station
3. In response, activate Lion's Eye Diamond by sacrificing it and discarding your hand, adding
4. Activate Blasting Station by tapping it and sacrificing Eternal Witness, dealing 1 damage to any target
5. Resolve the Blasting Station trigger, untapping it
6. Resolve the Eternal Witness trigger, returning Brought Back from your graveyard to your hand
7. Cast Brought Back by paying , returning Eternal Witness and Lion's Eye Diamond from your graveyard to the battlefield tapped
8. Repeat from step 2, adding mana of any color in step 3 once you have an arbitrary amount of white mana
9. Once you have infinite mana, you may choose any other valid target for Brought Back in place of Lion's Eye Diamond in step 7

Results

• Infinite colored mana
• Infinite damage
• Return all permanent cards in your graveyard that were put there from the battlefield this turn to the battlefield tapped