Golem Press + Vara's Sanctum are the combo you want; Bartholo may seem a bit gratuitous but he's in here as an Aegis Unblockable more than anything else.
Note that Xenan Temple + Pristine Light combo means you can wipe your opponent's largest units and draw them into your own hand. Use this constantly because your list is exceedingly unit-light.
Market is still a bit in flux.
Golem Press and Vara's Sanctum are set in stone as extra copies of your two big combo pieces. The rest are tailored as follows:
Avigraft / Bloodlust - Counters big time / FTP
Vara, Vengeance-Seeker - Counters Hooru / Stand Together
End of the Story - Counters "decks which have units"
Seek Power
x3
2
Golem Press
x3
2
Lost Scroll
x3
2
Porcelain Mask
x4
3
Bartholo, the Seducer
x4
3
Kerendon Merchant
x4
3
Pristine Light
x4
3
Slay
x4
3
Winchest Merchant
x4
4
Sandstorm Titan
x4
5
Harsh Rule
x4
5
Xenan Temple
x3
6
End of the Story
x2
6
Vara's Sanctum
x3
Justice Sigil
x4
Shadow Sigil
x3
Time Sigil
x2
Crest of Mystery
x4
Crest of Progress
x4
Crest of Vengeance
x4
Seat of Mystery
x1
Seat of Progress
x4
View Deck on Shiftstoned