Kenrith, the Returned King, Agatha of the Vile Cauldron, and Wild Cantor

Prerequisites

• Kenrith, the Returned King on the battlefield
• Agatha of the Vile Cauldron on the battlefield
• Wild Cantor in the graveyard
• available

Steps

1. Activate Kenrith's fifth ability by paying due to Agatha, returning Wild Cantor from your graveyard to the battlefield
2. Activate Wild Cantor by sacrificing it, adding
3. Repeat

Results

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