The mana value of a spell with tiered is determined only by its mana cost (in the upper right corner of the card)
They used to hunt werewolves in particular, but, when the Eldrazi raided their plane , they both decided to join the werewolves and defend their home
Mix all of that together, then add a sprinkling of the stock problems that publisher Ravensburger had with The First Chapter, where demand far exceeded supply for several months after release, and you have the perfect recipe for very valuable cards indeed
While I loved the Shimmering Skies Illumineers Trove, the Azurite Sea Trove definitely takes the crown this time
Along with this, at the beginning of your end step, you'll create a 0/0 red Gremlin artifact creature with X +1/+1 counters on it, where X is the number of differently named artifact tokens you control