So, Hooru control updated for set 6. I'm not sure whether or not this list is optimal, but I went off my teammate Erik's original list, then tinkered around with interaction and survival cards. Ultimately, I don't think that there's any particular right or wrong way to build the deck so much as preferences. Run your choice of cheap interaction, your 4 harsh rules, your card draw, and then season the top end and market to taste. Svetya's Sanctum pulls its weight, but a 5-drop do-nothing is always going to be an issue when playing it. Other choices may include Sediti or Rost in that slot.
Anyhow, it's been running fairly smoothly for me, so feel free to take it out for a spin and let me know how what changes you'd recommend.
Defiance
x4
1
Permafrost
x2
2
Eilyn's Favor
x1
2
Ice Bolt
x3
2
Privilege of Rank
x4
2
Strategize
x1
2
Vanquish
x2
3
Jennev Merchant
x4
3
Pristine Light
x1
3
Wisdom of the Elders
x4
4
Honor of Claws
x4
4
Throne Warden
x3
5
Harsh Rule
x4
5
Jotun Hurler
x3
6
Korovyat Palace
x3
6
Stormhalt Knife
x3
6
Svetya's Sanctum
x3
9
Martyr's Chains
x1
Justice Sigil
x7
Primal Sigil
x3
Cobalt Waystone
x4
Crest of Order
x4
Hooru Insignia
x4
Seat of Order
x3
View Deck on Shiftstoned