一部のカードでレア度を示すジェムが廃止に ベン・ブロード氏がRedditにて言及

・今後、アンコレクションカードからはジェムが無くなる
└《狐のマリン》《ケーアン・ブラッドフーフ》から召喚されるトークンミニオン。また、《野獣の精霊》などで召喚されるレジェンド以外のレア度のトークンもジェムが無くなる予定。(レジェンドミニオンの仕様を変更してから)
・コレクションボックスに存在するカードは今まで通りでジェムは無くならない
・《狐のマリン》はそのルールで作成したカードだった。だから召喚される宝箱はシルバードラゴンがあってもジェムが無い
・ただし今はオレンジ色のジェムがある＝レジェンドカードと判定していたため《狐のマリン》から召喚された宝箱を《レンド・ブラックハンド》で破壊できなかった
・今後、レジェンドカードはカード上部のシルバードラゴンの装飾で判定する。ジェムが無くてもシルバードラゴンがあればレジェンドカードと見なす
・この変更により《レンド・ブラックハンド》は正常にレジェンドミニオンを破壊できる
・対応時期は『コボルトと秘宝の迷宮』リリース後。バグ修正などで今やることは決まってしまっているため。今回の事象は致命的ではないと判断した

Redditより引用[ソース]

■BenBrode
We have a consistency pass on the Silver-Dragon being targetable by Rend Blackhand coming soon.
The new rule: The Orange Gem (what Rend currently looks for) will only be on Legendary collectible cards. The Silver Dragon will be on all Legendary cards, collectible or not. In a future patch, Rend will look for the Silver Dragon, not the Orange Gem.
Marin was built while we were in the new-rule mindset, so the chest uses the new rules, but we haven't actually changed Rend yet, and won't until the patch after K&C (at the earliest), so it's a bit funky right now.
Until we do, keep in mind that Legendary = Orange Gem, in gameplay. After the change - Legendary = Silver Dragon.
Sorry for the inconvenience!

■なぜそんなに適応時期が遅いのか？
Usually when we identify a change we want to make we have to factor in a couple things when deciding which 'branch' to check the change into.
In this case, we were running up against the limits of what we could fit into 10.0, due to total number of hours of dev work, hours of bug fixing, and hours of Quality Assurance time, as they verify that things work as they should. Some tasks are easy for us to implement, but have far reaching effects, and so most of the work is QA verification. Correctly prioritizing which fixes/features make it into which patch means taking careful consideration of how much work each developer has on their plate, how much time it will take to fix bugs for each patch, how much time to reserve for additional polish work, and how much time will be required to QA it all. Often when we identify something new, it doesn't get slotted into the next patch, because we've already served ourselves a full plate of stuff to do in order to ship the patch in time, and so it gets assigned to the next patch that has room in it for devs and QA.
All that said, sometimes we "hotfix" things that are server-only (like this change). This has a somewhat higher cost on QA, because they have another milestone they need to test; it's not part of their test-cycle for the next patch. It's possible this particular change gets moved up in priority, and we bump something else to make room for it.

■《野獣の精霊》など他のトークンカードからも無くなるのか？
Yes, although i think we changed the Legendaries first - not sure on timing for the rest. Thanks for calling that out - I made sure they're on our list.