Kenrith, the Returned King, Earthcraft, Agatha of the Vile Cauldron, and Masked Meower

Prerequisites

• Kenrith, the Returned King on the battlefield
• Earthcraft on the battlefield
• Agatha of the Vile Cauldron on the battlefield
• Masked Meower in the graveyard

Steps

1. Activate a basic Swamp by tapping it, adding
2. Activate Kenrith's fifth ability by paying due to Agatha, returning Masked Meower from your graveyard to the battlefield
3. Activate Earthcraft by tapping Masked Meower, untapping the basic Swamp
4. Activate Masked Meower by discarding a card and sacrificing it
5. Repeat

Results

• Infinite draw triggers
• Infinite rummaging
• Infinite self-discard triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite death triggers
• Near-infinite sacrifice triggers