Okay... So much more to explain here, that I should really write down, but I don't quite know where to start. This delves into ancient history in my campaign, and its also some of the edited hilights of the last 15 years of gaming, pared down to the stuff that is still plot relevant. Really I'm typing this out for my own future reference, and because future and present players may find it handy. I may even see if I can get some of them here to correct me when I go wrong.
Okay, lets take a look at Arik first. This dips in and out of canon, and contains passing references to at least four classic modules here, for the observant
Arik - The Eye Tyrant - his curse, his followers, and his eyes
It isn't entirely relevant why Arik was exiled. It isn't even remembered really; it was long ago, before elves, men and dwarves roamed on the surface of Mystara. He, along with Hosadeus and Zargon, were amongst the first sentient beings on the planet, and Arik became immortal before the lines between mortal and immortal were so very distinct; in the great war between the Immortals and the Other beings (known occasionally as the Outer beings, it is difficult to know exactly who these creatures were although it is believed that the long lived animosity between the Draeden and the Immortals is linked to them) Arik sided against the other Immortals. On the losing side in that conflict he was banished, as were some of the powerful mortals who served the enemy (Ariks most loyal followers, the Carnifex). They were sent to a distant prison plane, reachable only by very complex and difficult magical means. There, they waited, and slowly began to plot.
The Carnifex were not Ariks only followers, he had also created his own servitor race, the beholders, and they were already spread far and wide across the multiverse before the exile. While some few beholders contine to worship Arik to this day, few remember his teachings. That does not mean, however, that Arik has been forgotten, in fact there have been cults to Arik since ancient times.
And it was one such cult that re-discovered the means to produce an Eye of Arik, a device attracting evil creatures and creating a small rift to the plane of Ariks imprisonment, also the first step needed to free Arik.
Originally, they plotted their dark craft in caves in the Borderlands, near Castellans Keep in Traldara. Soon they were ready to experiment, and smuggled the ingredients they needed into Haven, where they brought a terrible curse upon the land. Delighted with their efforts, the evil priests of Arik returned to their caves, only to suffer an untimely demise at the hands of some young adventurers, 'led' by the mage Obsidian, including the priest Keithsara (metamorph, and priestess of Kagyar), Marilyn (manteis bard from North Norwold, or Caltia) and Beotach (warrior, and North Norwold barbarian), Squerglar (Bellisarian burglar extraordinaire) and Apophis (Thothian Paladin of Ra, a.k.a Ixion), and Eduardo Silverberg (or Ed, an assassin of complex parentage, but raised in the bleak city of Skyfyr in the Alphatian colonies on Esterhold). These adventurers killed the priests in their hideout and temple at the Caves of Chaos, and lifted the curse over Haven. It was, incidentally, the same adventurers who later discovered Rheddrian Benekander trapped in his own 'shield', which led them on a path that later put them in the right place at the right time (the Radiance) to save Alphatia from being sunk, but that is a story for another day. More on that later.
What the party did not discover at that time was that the ringleader was a mage named Fredegar, who had been the first to rediscover Ariks teachings while on an adventure on the Isle of Dread (Master Terari himself, of the Collegium Arcanum in Sundsvaal, warned Fredegar of the dangers of those texts, but alas Fredegar did not listen); coincidentally, he was accompanied at the time by Marilyn, Ed and Keithsara, among others, and Obsidian would later have the same master that Fredegar served (Spirrel) at the time.
Suffice to say that this earned them the never ending emnity of Arik and his followers; he later sent assassins to kill the party but failed, and after many years, and many skirmishes between his followers and the party, a group of priests finally managed to raise another Eye, only this time in Magan, a city in Southern Norwold, and seat of the Duke of Maganshire, an ancient wizard named Spirrel. Spirrel was, incidentally, Obsidians master, and several other adventurers already involved in this plot (Squerglar and Beotach among them) owed him fealty.
That party of adventurers (now also having among its ranks Bethany, a dryad druid, and Singer Soulfire, an elven druidic knight) battled their way through the city of Magan (infested now with horrific monsters), into the castle, defeated Fredegar (who was forced to flee) and destoyed the new Eye. Having raised the curse, they discovered that Spirrel was unrecoverably dead, having died a final death battling Fredegars hordes. Beotach, most senior count in the land, now assumed title of Duke.
Note: For reference, Beotach was an NPC who travelled with the party for many years, an NPC with a considerable history which will probably not become relevant here; Fredegar was a PC until shortly after discovering those texts, when the player moved away, all of the other adventurers named were PCs, including Obsidian, Marilyn, Keithsara, Apophis, Bethany, Singer, Squerglar... Other PCs like Diana and Juiven came and went from that group, but they were the mainstays for years. I like to keep old PCs in my games; Spirrel was a PC in yet another earlier incarnation of my campaign, which is littered with such characters. Also accompanying Fredegar, Marilyn, Ed and Keithsara were Gelbo Nimblefingers, halfling Berserker from Leeha, Rhodacter a mage native to Rainbow Park on the Alatian Islands, Thermon priest of Averyx (a non-canon immortal patron of Alphatian Imperialism) and Throm (a dwarf so stupid that he nearly drowned in an attmept to run down the hold of a sinking ship in full armour, to rescue his bag of gold - and who later became head of Maganshires income tax collection service.
Later, I'll have to go into Keithsaras story in somewhat more detail, and also that of Fredegar.