The mana is awkward, but I think this could work. The problem with clues is that they aren’t generally as valuable as you’d hope they would be. Here, we can use [scryfall]Thopter Spy Network[/scryfall] for extra advantage, but generally the clues just aren’t worth it.

However, the mana is, again, very awkward. Playing a turn one [scryfall]Thraben Inspector[/scryfall] just isn’t going to be easy (and it won’t happen very often) with the lands available. This all makes this more of a casual deck, but maybe we’ll get something in the next set that will push this deck into real playability, albeit not into being a real contender.

Still, potentially fun.

[deck]
[creatures]
4 Thraben Inspector
4 Daring Sleuth
4 Sylvan Advocate
4 Den Protector
4 Bygone Bishop
4 Reflector Mage
4 Tireless Tracker
[/creatures]
[spells]
4 Collected Company
4 Thopter Spy Network
[/spells]
[lands]
4 Evolving Wilds
4 Yavimaya Coast
2 Prairie Stream
2 Port Town
2 Canopy Vista
2 Fortified Village
3 Lumbering Falls
2 Plains
2 Forest
1 Island
[/lands]
[/deck]