Godeke, Diplomat to Shadesmar

Godeke, Diplomat to Shadesmar has indestructible as long as there are four or more historic cards in your graveyard. (Artifacts, legendaries, and Sagas are historic.)

Whenever Godeke or another legendary creature
you control dies, return target legendary creature
card with lesser mana value from your graveyard to the battlefield tapped.

based on Havi, the Allfather