Blizzard has announced some revisions to Hearthstone's Tavern Pass rewards track for the coming season, and part of that includes a new type of cosmetic reward for reaching certain milestones. The new track to accompany the Forged in the Barrens expansion will include diamond cards, a new cosmetic tier that looks even fancier than gold cards.

As detailed on the Hearthstone blog, diamond cards feature 3D animations, a larger space for the card art to shine, and a unique diamond border on both the card in hand and the play token on board. Unlike gold cards, there won't be a corresponding diamond card for every single card in the set. Instead, these are unique cards that can only be obtained by special means.

Forged in the Barrens will introduce two diamond cards, and Blizzard promises at least one for each expansion going forward. For Barrens, Blademaster Samuro and Bru'kan will get the diamond treatment. You can obtain Samuro by purchasing the Tavern Pass, and Bru'kan by completing the Legendary Collector achievement (i.e. collecting all Legendary cards in the Barrens set).