An example is Moldgraf Monstrosity from Innistrad
Regatha is a plane thats known almost entirely for its association with the fantastic Chandra Nalaar
Cloudcastle: After youve first summoned a Chaofeng prior in the duel you can next time Synchro for Cloudcastle, whose effect revives a Level 9 monster from your graveyard (Chaofeng) when summoned, plus some irrelevant continuous effect
It is card #087 of the set
Number 35 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (7/12/2019) Rule of Law looks at the entire turn to see if a player has cast a spell, even if Rule of Law wasn't on the battlefield when that spell was cast
Thats especially true for high-quality graded collections that are still in mint condition