Thanks to Pachi for his insights. And here it is his version:
FORMAT:Expedition
4 Warning Shot (Set12 #1)
4 Gleaming Grenadin (Set10 #32)
4 Sparking Vermin (Set10 #56)
4 Cyber Combustion (Set10 #54)
4 Downdark Scrounger (Set10 #314)
4 Grenadin Rescue (Set12 #6)
4 Grenahen (Set1107 #20)
4 Foraging Tri-Toe (Set11 #199)
4 Realign the Stars (Set10 #147)
2 Shorthopper (Set10 #342)
4 Discover Talents (Set12 #119)
4 Serpent Hive (Set12 #121)
4 Align the Tesseract (Set10 #300)
1 Shadow Sigil (Set1 #249)
4 Skycrag Banner (Set2 #186)
4 Stonescar Painting (Set10 #176)
4 Stonescar Tome (Set12 #205)
4 Feln Painting (Set10 #77)
4 Feln Tome (Set12 #202)
4 Seat of Cunning (Set0 #62)
---------------MARKET---------------
1 Obstructive Flicker (Set11 #99)
1 Tesseract's Technique (Set10 #332)
1 Nectar of Unlife (Set10 #129)
1 Razorblades (Set10 #145)
1 Channel the Tempest (Set1 #244)
Ahh I see why you didn't - no sigils.
you do have inscribes though which work as well.
The current hit rates for Grenahen are around 88%, and this is quite consistent.
But the main point is that in a meta with Exploit, Varbuk, and Slay, you want many Tesseract sources.
It is also worth noting that sometimes you simply don’t have anything to sacrifice for it, which can be pretty rough.