Nezumi Prowler is also an artifact creature, which means it triggers things like Dragonspark Reactor upon entering the battlefield or things like Oni-Cult Anvil upon dying
As a bonus, if Enkira is equipped with any cards, your opponents are forced to block her with creature, which can help whittle down your opponent's valuable creatures while you make unfavorable blocking scenarios.
It is a common, and by how cheap a playset was I am guessing it did not rise to the level of a tournament staple
However, Lightning Greaves gives shroud as well as haste, and thats almost unbeatable
As you continue to venture deeper into the dungeon, you will often be offered a choice of which room and triggered effect you want to choose next: Until finally you reach the end of the dungeon, completing it