Higher mana costs are okay because the game will surely break the 10th turn mark
I even tried it in Pioneer, where Archdruid isnt available, and it managed to advance the board state while digging for key pieces
They feel very thin and a bit glossy, and i think the glossy nature of them is what is making me think they are fake, because i remember that being an issue when i was a kid
There is also a cycle of legendary, rare creatures, with powerful effects that can turn the course of a game: Sephara, Skys Blade (White), Atemis, All-Seeing (Blue), Vilis, Broker of Blood (Black), Drakuseth, Maw of Flames (Red), Gargos, Vicious Watcher (Green)
Hopefully, well learn more as that June 13th release date approaches