Kenrith, the Returned King, Relic of Legends, Agatha of the Vile Cauldron, and Boromir, Warden of the Tower

Prerequisites

• Kenrith, the Returned King on the battlefield
• Relic of Legends on the battlefield
• Agatha of the Vile Cauldron on the battlefield
• Boromir, Warden of the Tower in the graveyard
• available

Steps

1. Activate Kenrith's fifth ability by paying due to Agatha, returning Boromir from your graveyard to the battlefield
2. Activate Relic of Legends' second ability by tapping Boromir, adding
3. Activate Boromir by sacrificing it
4. Repeat

Results

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