blue and red look terrible. White, Black, and Green look fine, but overall it's a weak pool. I think I'd go with White/Black as you have a lot of removal, 1 bomb(Tormentor) and just a lot of solid cards. Not a great deck but for a small pre-release it's a Top 8 deck with some tight play.
White has good removal but is shallow with bodies.
Green has some great Investigate stuff going. I haven't actually played with Investigate in the format, but I saw others do well with UG investigate with sufficient synergy and good green creatures. Tireless Tracker is a huge bomb. You could play GUw Investigate splashing for good white removal and Geist of Saint Traf:
Curve:
1 - cs
2 - csss
3 - cccccssss
4 - cccc
5 - cc
6 - c
Sources:
green - 9
blue - 7 (+ 2 green fixing)
white - 3 (+ 2 green fixing)
It's low on early drops though (all 3 colors lack 2-drops), so you straight up lose if you can't hit 3 mana or get out impactful stuff. It also runs mediocre creatures in favour of synergy. Maybe the synergy isn't strong enough. Haven't tested this archetype yet.
Going GWu or GW instead lets you play a better creature-base and more removal, since the blue really does suck. But then 0 bears and too many Squires
1x Angelic Purge
1x Apothecary Geist
1x Avacynian Missionaries
1x Bound by Moonsilver
1x Cathar's Companion
1x Drogskol Cavalry
1x Hope Against Hope
1x Inquisitor's Ox
2x Militant Inquisitor
1x Nahiri's Machinations
1x Silverstrike
2x Thraben Inspector
Blue
1x Compelling Deterrence
1x Daring Sleuth
2x Drownyard Explorers
1x Fleeting Memories
1x Ghostly Wings
1x Invasive Surgery
1x Just the Wind
1x Lamplighter of Selhoff
2x Pieces of the Puzzle
1x Press for Answers
1x Rise from the Tides
2x Silburlind Snapper
1x Stitched Mangler
1x Stormrider Spirit
1x Welcome to the Fold
1x Alms of the Vein
1x Dead Weight
1x Elusive Tormentor
1x Farbog Revenant
1x Ghoulcaller's Accomplice
1x Grotesque Mutation
1x Heir of Falkenrath
1x Indulgent Aristocrat
1x Merciless Resolve
1x Murderous Compulsion
1x Rancid Rats
1x Sanitarium Skeleton
1x Throttle
1x Vampire Noble
Red
1x Convicted Killer
2x Ember-Eye Wolf
1x Flameblade Angel
1x Hulking Devil
1x Insolent Neonate
2x Magmatic Chasm
1x Rush of Adrenaline
1x Scourge Wolf
1x Spiteful Motives
1x Uncaged Fury
1x Vessel of Volatility
1x Aim High
1x Autumnal Gloom
1x Briarbridge Patrol
1x Byway Courier
1x Confront the Unknown
1x Cult of the Waxing Moon
1x Equestrian Skill
1x Graf Mole
1x Kessig Dire Swine
1x Loam Dryad
1x Rabid Bite
1x Root Out
1x Solitary Hunter
2x Thornhide Wolves
1x Tireless Tracker
1x Weirding Wood
Multicolored
1x Altered Ego
1x Invocation of Saint Traft
Artifacts
1x Explosive Apparatus
1x Haunted Cloak
1x Murderer's Axe
1x Neglected Heirloom
1x Wicker Witch
Land
1x Forsaken Sanctuary
1x Woodland Stream
1x Convicted Killer
2x Ember-Eye Wolf
1x Hulking Devil
1x Insolent Neonate
1x Scourge Wolf
1x Elusive Tormentor
1x Farbog Revenant
1x Ghoulcaller's Accomplice
1x Heir of Falkenrath
1x Indulgent Aristocrat
1x Rancid Rats
1x Sanitarium Skeleton
1x Vampire Noble
2x Magmatic Chasm
1x Spiteful Motives
1x Uncaged Fury
1x Alms of the Vein
1x Dead Weight
1x Grotesque Mutation
1x Murderous Compulsion
1x Throttle
1x Neglected Heirloom
Lands
1x Forsaken Sanctuary
8 Swamp
7 Mountain
Green has some great Investigate stuff going. I haven't actually played with Investigate in the format, but I saw others do well with UG investigate with sufficient synergy and good green creatures. Tireless Tracker is a huge bomb. You could play GUw Investigate splashing for good white removal and Geist of Saint Traf:
1 Loam Dryad
1 Daring Sleuth
1 Byway Courier
1 Graf Mole
1 Tireless Tracker
1 Stitched Mangler
1 Wicker Witch
1 Solitary Hunter
1 Altered Ego
1 Briarbridge Patrol
1 Drownyard Explorers
1 Cult of the Waxing Moon
1 Stormrider Spirit
1 Kessig Direswine
1 Confront the Unknown
1 Press for Answers
1 Compelling Deterrance
1 Rabid Bite
1 Weirding Wood
1 Invocation of Saint Traf
1 Angelic Purge
1 Bound by Moonsilver
1 Woodland Stream
8 Forest
6 Island
3 Plains
Curve:
1 - cs
2 - csss
3 - cccccssss
4 - cccc
5 - cc
6 - c
Sources:
green - 9
blue - 7 (+ 2 green fixing)
white - 3 (+ 2 green fixing)
It's low on early drops though (all 3 colors lack 2-drops), so you straight up lose if you can't hit 3 mana or get out impactful stuff. It also runs mediocre creatures in favour of synergy. Maybe the synergy isn't strong enough. Haven't tested this archetype yet.
Going GWu or GW instead lets you play a better creature-base and more removal, since the blue really does suck. But then 0 bears and too many Squires
2 Thraben Inspector
1 Loam Dryad
1 Byway Courier
1 Graf Mole
1 Tireless Tracker
2 Militant Inquisitor
1 Solitary Hunter
1 Avacynian Missionaries
1 Briarbridge Patrol
1 Apothecary Geist
1 Cult of the Waxing Moon
1 Thornhide Wolves
1 Drogskol Cavalry
1 Neglected Heirloom
1 Confront the Unknown
1 Aim High
1 Rabid Bite
1 Haunted Cloak
1 Angelic Purge
1 Bound by Moonsilver
1 Silverstrike
9 Plains
8 Forest
Curve:
1 - cccss
2 - ss
3 - cccccsss
4 - ccccs
5 - cc
6+- c
Maybe splashing for Altered Ego and Invocation of Saint Traf and a tempo spell? Or just straight GW.