Godeke, Shadesmar Diplomat

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

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

based on Havi, the Allfather