There are three drops in total: Weapons, Grimoire, and Game Over
Sapphire continues the trend from Rise Of The Floodborn of showing how powerful synergy between characters can be with Huey, Dewy, and Louie, particularly with Huey's ability, Three Nephews, which allows you to draw three cards if one of each of the Nephews is on the field
After all, Commander is a game that most people play to escape from stress and have a good time
Mount Gulg is the second such area you explore, though it looks a bit different in the game
You don't really see overhanging arches spouting lava, rather it's just a big cave with lava pits (that you can traverse, at that)
However, in the world of Disney Lorcana, in which Glimmers of familiar characters are summoned using enchanted ink by the players, they can be changed in many different ways