Nice synergy with the human tokens, Clues and Second Harvest. For this sort of deck I've seen a lot of people like Expose Evil for a bit of control, though if you want something a bit more permanent Angelic Purge seems good. Not sure if Briarbridge Patrol fits here as you'd need to spend 6 mana to sacrifice enough Clues to get out a creature and there's only one thing worth it, Sigarda. I suppose you'd get 3 cards on top of playing her for only 1 more mana, but she still needs to be in your hand. However if you just want it for the Investigate trigger I guess that's fine, I don't have anything better to suggest haha.[Edit] Ok I just saw that you do have a Tamiyo's Journal in there, so that's better, however there's only 1 of them and the 2 Briarbridges so I don't see the combo coming off very often, so my comments still stand I believe.

karidyas: Hmm, think you're right on these.

• Root Out => Angelic Purge is a nice extra bit of versatility for the cost of a token/Clue.
• Traverse the Ulvenwald => Expose Evil will probably be more effective in the early game particularly when I'm aching for a third land.
• Briarbridge Patrol => Byway Courier seems better since I realized that Briarbridge doesn't play very well with Bygone Bishop when it brings in creatures, and since Courier has a nice synergy with Ulvenwald Mysteries and the various sac outlets.

Thanks!

blue! blue! blue! blue! get gotta get those Ongoing Investigations, Erdwal Illuminators, Trail of Evidences, and those Fleeting Memories in (imo, quite a few of these are really nice cards, especially Fleeting Memories and Ongoing Investigation also if you do add blue, consider Daring Sleuth  ^Flip since he's a human and interacts with the semi-tribal action you got going on)

matiya024 Sure those are all nice cards, but if those were added it would be a completely different deck. I think it's more in the spirit of things to try think of enhancements to the clue+humans GW theme, rather than overhauling the whole thing.

One more suggestion I just thought of, if you have Evolving Wilds you can get more +1/+1's on Tireless Tracker as it counts as a land.