What I can say about Magics first legendary wall is that I think it will create fun game states for playgroups that are already enjoying formats like Star or Emperor, but dont have the game size to support it on a given night
The Green Disenchant Project has some more in-depth information and scans that may help identify such cards
Lets color, create, and make Pikachu shine
Orfeo, the Boulder Ognis, the Dragon's Lash Prossh, Skyraider of Kher Rebuild the City Riveteers Ascendancy Riveteers Charm Riveteers Confluence Sangrite Backlash Scarland Thrinax Sek'Kuar, Deathkeeper Shattergang Brothers Slimefoot and Squee Soul of Windgrace Sprouting Thrinax Szarel, Genesis Shepherd Thantis, the Warweaver The Beamtown Bullies The Reaper, King No More Unleash the Inferno Vaevictis Asmadi Vaevictis Asmadi, the Dire Vazi, Keen Negotiator Venom, Lethal Protector Viggo, End of Ig's Crossing Violent Ultimatum Wasitora, Nekoru Queen Winter, Misanthropic Guide Xira Arien Xira, the Golden Sting Yurlok of Scorch Thrash Ziatora's Envoy Ziatora, the Incinerator