Kenrith, the Returned King + Viscera Seer + Palinchron

Kenrith, the Returned King

Viscera Seer

Palinchron

How it works

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

This looping engine relies on Palinchron’s ability to untap lands on entry to constantly refresh your mana supply, which is initially kickstarted by fueling Kenrith, the Returned King's black-mana resurrection ability. Once Palinchron is back on the battlefield, Viscera Seer provides a convenient outlet to sacrifice it back into the graveyard, generating infinite scries and sacrifice triggers along the way. Kenrith, the Returned King then steps back in to reanimate the leviathan, turning the excess land mana into a closed loop that endlessly recycles the creature.