Back in June this year, Ravensburger held what they called a last chance sale for First Chapter booster boxes in English, Chinese, and Japanese, stating on their website: Please note that this will be the last chance to purchase these products . Technically, they could have been referring just to booster boxes rather than individual packs
A 6/6 for six mana might seem slow, but his ability to exile creatures and then pay 1 life to gain their activated abilities is a brewing dream
If you have a giant mana sink and ways to untap it, something easy to accomplish in a format like Commander, you can do this multiple times a turn and cast a ton of powerful, high-cost spells for free
With Arena of the Ancients in play, any legend or Commander that wants to attack or needs to tap to activate its ability is effectively hamstrung
While many of them would be interesting spaces to explore and delve into from a design perspective, they're still only filled with untapped potential (at least, at the time of writing)
Each of these Hydras has interesting abilities but were ultimately overpowered by those in my actual top ten