Courtesy of someone at London MCM Comic Con
The 2 promos are Scrap Wyvern* or Great General of the Six Samurai*
The 2 sneak preview cards are Dragonmaid’s Sendoff* or Armory Call*
*Due to image quality, we can not identify the official english names. Thusly, we used our fan translations until better quality images are available.
Source: MCM Comic Con