You can only Special Summon "Gateway Dragon" once per turn this way
Although most players would prefer the lively alternate art leader from OP07 500 Years In The Future, this one is far more rare and will earn you some respect points at your local tournament
A few months back, I wrote about my process when building my all-Secret Lair deck
Flavor Text "The Ring is mine!" Number 355 Language English Legal Formats Commander, Historic, Legacy, Modern, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Pauper, Pioneer, Standard, Timeless Rulings (6/16/2023) Call of the Ring's last ability will trigger any time you choose a creature as your Ring-bearer, even if that creature was already your Ring-bearer
Cards with a rarity of 1 till four diamonds, and 1 star can be traded