The Luxon Beacon

Whenever another historic permanent you control is
put into a graveyard from the battlefield, put a
consecution counter on this artifact.

{1}{u}{b}, {t}, Remove four consecution counters
from this artifact: Return target creature card from
your graveyard to the battlefield.

"This thing...is beyond comprehension, even. And
the desire to get it back is going to be great."
—Caleb Widowgast