Casual deck using Investigate to make a ton of Clue tokens!
Credit goes to NumotTheNummy on Twitch, but he was restricted to only using things that syngerized directly with Tamiyo's Journal - this is more of a casual build that can obviously use anything (though I'm still trying to honor the original idea and stick close to the theme).
Tamiyo's Journal/Win Conditions
Tamiyo's Journal
, the main focus of the deck, for tutoring for anything in the deck and getting a Clue token on upkeep.
Ulvenwald Mysteries
for making Human Soldier tokens when sacrificing Clue tokens.
Cryptolith Rite
as a way to get mana out of creature tokens to do more things.
Ghirapur AEther Grid
for using Clue tokens to ping creatures/players.
Fleeting Memories
in the sideboard as an alternate option for a win condition.
Second Harvest
for doubling ALL tokens (not just creatures) at instant speed!
Weirding Wood
as a way of ramping, as well as a free Clue token.
Creatures
Erdwal Illuminator
for getting double Clue tokens once each turn.
Graf Mole
for gaining a ton of life when sacrificing Clue tokens.
Tireless Tracker
for getting Clue tokens on landfall, as well as pumping him to insane levels.
Whirler Rogue
and
Thopter Spy Network
for Thopter tokens and a way to get a big Tireless Tracker through.
Westvale Abbey
for turning weaker creatures into a fat, Indestructible Demon.
Defense
Confront the Unknown
for a surprise pump (offensive/defensive) on one creature when a lot of Clues are out.
Confirm Suspicions for a counterspell getting 3 Clue tokens (a lot of mana, but lines up nicely with Tamiyo's Journal).
Sideboard
Engulf the Shore
for a board reset.
Negate
for a lower-cost counterspell.
Clip Wings
for flying creature removal.
Naturalize
for enchantment/artifact removal.