The only difference is that Gold doesn't need to tap itself to activate
You get what you see, make sure to double click on images to zoom in and verify sharpnessMorophon, the BoundlessK'rrik, Son of YawgmothEdgar MarkovEzuri, Claw of ProgressThe Gitrog MonsterGrand Arbiter Augustin IVKarlov of the Ghost CouncilMizzix of the IzmagnusNicol Bolas, the RavagerNicol Bolas, the ArisenZacama, Primal Calamity
o:/^ 3 :/ This search gives us all cards with effects that cost exactly 3 generic mana, with no other cost
On top of that, Mark Rosewater, Magics Head Designer, has spoken many times on Blogatog about how unlikely the idea is to be used again
Court of Grace incentivizes playing a lot of reactive cards like Swords to Plowshares and Wrath of God and offers both a draw engine and a win condition at a very cheap rate for these do-nothing decks while also being a powerful curve-topper for the white aggressive decks
The main thing holding this deck back is its narrow interaction