Saffgor: Looping Fall of the Thran or the second chapter of The Restoration of Eiganjo every turn seems like a reasonable basis for a hatebear or stax deck, and the fact Garnet comes down early and gets just big enough to likely survive most early blockers means you have the capability to get under a lot of value strategies
And summon the Avatars, big creatures that fight on behalf of their respective color
It's just good in a bunch of places, and with its triggered ability it has a lot of homes
Any Commander deck can find itself running out of gas if all it can draw is one card per turn, being able to draw many cards per turn gives you options and means you can enact your battle-plan more quickly and more often
Being one of the first iconic cards, and an absolutely beautiful looking one at that, I'm not surprised this is demanding a pretty penny right now
Thank you for all of your feedback