Kenrith, the Returned King, Great Whale, and Yahenni, Undying Partisan

Prerequisites

• Kenrith, the Returned King in hand or on the battlefield or in the command zone
• Great Whale in the graveyard
• Yahenni, Undying Partisan on the battlefield
• You control up to seven lands that can tap to produce at least

Steps

1. Activate up to seven lands by tapping them, adding at least
2. Activate Kenrith's fifth ability by paying , returning Great Whale from your graveyard to the battlefield
3. When Great Whale enters the battlefield, it triggers, untapping up to seven lands
4. Activate Yahenni by sacrificing Great Whale
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mana lands you control can produce
• Infinite untap of lands you control