Crossed swords

[Corwin]

"Do we have an idea what the Sharrans are doing there, or if there's any movement from the Hells in the area?"

[Anastasia]

A headshake, "Only that whispers speak of an elite Sharran who has gone there, but the cowards in the shadows hesitate to name them."

[Corwin]

"Well then, we'll have to go and take a look ourselves," Seira muses. "Donald, the two of us and Amaryl... maybe invite Ranbar as well?"

[Anastasia]

"Yeah," Donald agrees, "I could use a good fight, how about you?"

[Corwin]

"It's just what I need. Thanks again, Joyn!"

With a pleased smile, Seira disappears to prepare for departure.

Let's go! All combat loadout spells will be precast by an avatar on the four of us before we leave.

For reference, NPC spells (CL 37):

Overall: Glorious Rally [A, 1min/lvl], Celestial Valor [A, 1min/lvl]
Defensive: Foresight [10min/lvl], Visions of the Future [1hr/lvl], Dragonskin [10min/lvl]
Perception Modes and Protections: True Seeing [1min/lvl], Vision of the Omniscient Eye [1min/lvl], Detect Scrying [24hr], Greater Arcane Sight [1min/lvl]
Movement Modes and Protections: Freedom of Movement [10min/lvl], Pass Without Trace [1hr/lvl]
Skill Checks: Voice of the Dragon [10min/lvl], Greater Heroism [1min/lvl]
Ability Checks: Good Hope [1min/lvl]
Immunities and Resistances: Mind Blank [A, 24hr], Nondetection [1hr/lvl], Mass Death Ward [1min/lvl], Heroes's Feast [12hr]
Esoteric Boosters: Fortunate Fate [10min/lvl], Spell Turning [10min/lvl]

[Anastasia]

That all sounds good. How are you planning to get to where you need to get?

[Corwin]

Greater plane shift, we'll start by trying for 3000ft away.

[Anastasia]

No good, blocked cleanly.

[Corwin]

Tossing on a few stealth spells, Seira aims for a mile out this time.

[Anastasia]

Ting. Still nothing.

[Corwin]

Seira keeps trying, incrementing by a mile each time.

[Anastasia]

Up to 10 miles, nothing. At this point your lore tells you that something more than a typical teleport block is interfering. It may be in an area that simply interferes with teleportation or more abnormal effects are in play.

[Corwin]

Well then. Seira decides to spend a few moments focusing on the issue at hand.

Super-buffed Knowledge 155 check for how/where to travel to get there.

[Anastasia]

Something's blocking, obviously. In this case your best guess is that the cube currently is (and may be anchored in) somewhere that simply blocks teleportation over a wide radius, likely through a psychic storm on the corresponding place on the Astral or a large dead magic area. A large area of severed astral links is also always a possibility when a deity's involved.

Your lore lets you know that it doesn't feel like a psychic storm, one that large would have signs and you haven't noticed them. Dead magic is possible you suppose, or the links. In this case your best play would be to get to Ocanthus, find out where it's been last seen and search from there.

There's also the possibility that Shar's personally involved with an avatar or her true form. In that case all bets are off.

[Corwin]

"What do you think? Try our luck at Ocanthus?"