United in Stormwind Cards List & Guide
Considering WoW lore, if those three princes didn't have a synergy with themselves or the Blood Queen, they won't have any with anything else.
Grim Patrons don't die until the spell effect is over. They will fill the board and die at the 7th iteration of Defile.
I was starting to question my counting capabilities. Opened the first legendary at the 42nd Old Gods pack.