Golden Stormbrewer is a card you get from the reward track.
I earned 2 of them and they are both checked off.
“This card is uncraftable and undisenchantable”
Noticed this today as one of my rewards from the event was a regular Stormbrewer which should have been some other card because i should have 2 of them since theyre not disenchantable and i have them both checked off.