Runo wants you to get large creatures in your graveyard and on top of your library
Green also had some big creatures in Ice Age as well, Scaled Wurm, Johtull Wurm, Shambling Strider, Wiitigo, Lhurgoyf and the small but extremely useful Yavimaya Gnats
But for the geeky millionaire looking for an investment that both harkens back to childhood memories and has a proven track record of appreciating in value since 1993, nothing beats Magic: The Gathering cards
Long live you all, mill players everywhere
But before we reach that point, we survive by the merit of our many life-gain artifacts
Whether thats simply the biggest on your field or a creature with the most impactful ability is entirely up to you