First, you can get to the end of the dungeon in three steps by choosing to Oubliette yourself, or take the leisurely trip through the dungeon via both Veils of Fear and Sandfall Cell, where the deleterious effects are shared around the table
However, this card is very much useful for two main reasons: its keyword and its ability
Aside from the boosters and the four foil cards, the Blooming Waters Premium Collection also includes an oversized foil card of Blastoise ex
Quagsire costs 400 Pack Points to craft
Still, you can land it when players have already built out a board or floodgate the number of creatures they can put into play, and if they ever overstep you get to free-role your two best creatures into play
The deck's play pattern starts simple: use your elves, moles, or spider avatars to ramp into an Ouroboroid, then let your opponent sweat while it grows your board at a frightening rate