Hearthpwn

Hi there, I know if you win 500 games of hearthstone you get a golden chest plate. I'm a noob with no where near 500 wins but I noticed that area appeared to be upgraded for me playing standard ranked. I took a screenshot and attached it to this thread. Does anyone have any info in regards to how this area is upgraded over time?

Some skins have alternate trays which are unique to them. The skin in this image (Nemsy Necrofizzle) is one such skin. If you replace the skin with a different one, the tray will also change. 

(And yes, this can be made Golden. If you got 500 wins with Warlock, this tray will be Golden)

thank you so much for explaining this @DatMageDoe