Ansolon

[Eladris]

[note=Hamastl]Hamastl, king of the fire giants and scourge of Kvara, was sealed beneath the Forges of Kvarda by Koira Thunderfall in ancient times.  The Sea of Terror's shock wave shattered the magical seals keeping this spawn of Tian locked beneath the Ash Mountains.  It took Hamastl only three weeks to recapture Kvarda with a force of fire giants, azer and elementals once freed of imprisonment.  To this day, Hamastl sits unchallenged on the Mountain Throne of Kvarda, from which he greedily eyes the power of Stormsummit.[/note]The Sea of Terrors

Immediately after crumbling, one of the largest shards of Ulna fell to Ansolon in what is now known as The Sea of Terrors.  Just before impact, a shock wave of anti-magic nullified all enchantments within four-hundred miles of the coastal site, dismantling the floating towers at Derringorn and removing the wards on Hamastl's Prison; The Bitter Sea region was devastated by the aftermath.  Rather than strike the coast, the meteorite tore the land from its foundations, where it now hovers above the sea that rushed to fill the void.

The starfel quickly spread, but never far inland.  Ships that stray into waters nearby are rarely heard from again and those that return do so with stories of twisted abominations, fish-men and enormous, tentacled monsters that strike fear into the hearts of seasoned mariners.  The Sea of Terrors earned its name when maps of the Bitter Sea adopted the label "Here Be Terrors" for the region northeast of Derringorn Isle once known as the Frozen Coast.

For all its dangers, it was not until 145UR that amphibious creatures of the starfel began harrying nearby settlements; towns along the southern Frozen Coast, generally populated by refugees from Kvarda and Derringorn, were raided.  Survivors moved inland to Maros or farther south to the Bitter Sea spreading tales of huge, crablike creatures with razor-sharp pincers and toothy maws that devoured entire villages.  Worried that the Sea of Terror's influence would spread to the Bitter Sea, Maros and Trelban allied in 147UR to establish joint patrols on the starfel's border, an arrangement that ended 23 years later with Maros's occupation of Ennasport in 170UR.

Ultimately, it was the starfel at Marosfall in 212UR that slapped away the reaching claws of the Sea of Terrors.  The interaction between the two regions of starfel, as reported by Marosian troops retreating towards Atol Maros in 215UR, surprised the civilized world; these corrupt powers were in conflict.  The witnessed battle between aberrations of each starfel promised to give struggling Maros more time to defend against intrusion, but also raised new questions concerning the motives of starfel inhabitants, in general.

[ooc]As you can see, they will definitely make Aberrations and the Sea of Terrors is full of them. :)  Undead will be a different mechanic; restless spirits, dark magic, etc..  I'm still flushing out where I want magic to "come from" and I'll touch on undead once I get there.

I am running 4e and, to be honest, I'm just going to try and fill out monsters as they're needed.  Chuul and other aquatic baddies make a good fit for the Sea of Terrors, but I don't particularly like the names (which means chuul will inevitably be called "crab demons" or something by an NPC and it will stick).  The Sea of Terrors will be developed for levels 11-20, where Marosfall will be aimed at levels 6-11.

I'm still waffling on what nasty critters I want crawling around in Marosfall, which -- along with your question -- is why I'm posting tSoT first despite its increased level.[/ooc]