It's not exactly a mystery anymore, even if it was originally meant to be, and if you're curious to check it out for yourself, you can do so here: That's one Unsolved Magic Mystery now officially put to rest, even if the circumstances might be a bit disappointing
Rally the mightiest rulers of the seas and lead them into battle
Bosh, Iron Golem Bosh, Iron Golem has a pretty attractive textbox, but that mana cost is hard to stomach in the 2020s
The available cards include Aragorn, a hero card that doesnt count towards a players hero limit and can support other hero cards but can spell the end of the game if he is ever defeated
A three mana 1/3 flyer isn't great, but there will be decks that can make it a 3/3 in this format
Its comfortable, pretty, and gives you a sense of joy to play with