Innkeeper offering showed Herald of Flame as 10/12; was able to purchase for 3 gold. Card didn’t have Golden visual effects, and did not give me the ‘Discover’ effect when played, but otherwise functioned as a tripled minion (combined stats and 6 dmg Overkill effect).
I already had a Normal Herald in my hand, and bought a third to experiment. Bugged card did not let me create a Golden version.
Have seen other forum reports that seem to be same issue but for different cards.
Could be related to Captain Eudora’s bug which was fixed last night, perhaps the Eudora player sold the golden minion, which was bugged and returned to the minions pool.