Exodus of the Arcanite Eladrin

=== Background ===
Since their birth, the Feyed Eladrin of Tel'Ar Mil have honed and refined their mastery over the winds of magic. In this process they have developed several unique ways to cast their magic. These different approaches would lead to the development of the famous circles of Tal'Ar Mil and form the basis of druidic circles even to this day.
Despite their differences, all the circles worked through the spirits of nature. They didn't cause the magical phenomena directly, rather they implicitly negotiated with the surrounding spirits, granting them a faction of their own power to compel them to produce the effect the intended effect. This way their magic was closely tied to the surrounding nature. Thanks to their proximity and heritage from the Arbormonde they were the most powerful magic users of the ancient world.
However, their magic and bodies quickly weakened as they distanced from the Arbormonde and its surrounding forests. This is one of the primary reasons that the Feyed Eladrin did not spread nearly as far as the other ancient races, instead remaining largely within their ancestral forests.
=== Discovery of Arcane Magic ===
A young circle within the Tel'Ar Mil, called the Circle of Seeking theorized that there must be an underlying mechanism to their magic. Initially they sought such knowledge to deepen their understanding of and connection with nature and its spirits. Around ~15'500 BtS this would rapidly change. Archseeker Tess'Alric Daran codified the first arcane spell, a spell that would later simply be known as “Dancing Lights”. 
Unlike the traditional magic of the feyed eladrin, Tess'Alric's arcane spells required no help of nature spirit. His spells were universally applicable regardless of the situation or environment and proofed far more versatile, able to create effects previously thought impossible. His discovery quickly spread and soon others in the Circle of Seeking began to theorize and create their own arcane spells.
=== The Exiling of the Arcanite Eladrin ===
This however changed the outlook of the Circle of Seeking and many others criticized them for abandoning their connection to nature. This disagreement led to many councils, yet they were unable to mend the so-called Arcanite Schism. Eventually things deteriorated to such a point that their experiments were seen as so abhorrent to the feyed eladrin that in an unprecedented act, the great accord of Tel'Ar Mil in Radh'enial decided to exile all arcanite eladrin from the Evergreen Woods.
Such an act was traditionally seen as a death sentence. The exiles magic and physical prowess would wane as they left the dense Evergreen Woods for less magically potent lands. Even the arcanite eladrin, despite their name, still heavily relied on traditional nature magic for much of their daily life. Despite the harsh sentence, the arcanite eladrin were afforded the traditional 50 years to prepare for their exile and both the feyed eladrin and the arcanite eladrin declared a half century of mourning. Families were split, lovers spend their last few years together and leaders of both sides strived to ensure the wellbeing of both of their people.
Eventually around ~15'000 BtS the exile took place and the arcanite eladrin said their last goodbyes and set out westwards.
=== The Exodus ===
The arcanite exodus was not a single migration, rather a slow and steady process where they would build semi-permanent settlements for several decades before continuing their march. During all this time they continued their research into and development of arcane magic. Even as their nature magic ever grew weaker, expanded knowledge and new spells allowed them to compensate with arcane magic.
At the same time their bodies changed too, losing many of the gifts they inherited from the Arbourmond such as their floral traits, their ability to asexually reproduce and most painfully; their immortality.
After roughly 1'000 years of exodus, the arcanite eladrin reached the shores of south-western Excaria. Here they found a mysterious monolith of Slade. Now having fully replaced all nature magic with arcane magic, they decided to permanently settle in the region, founding several villages and town but most importantly the city of Sil'marathil, the capital of the Sil'darean Republic. At the same time, observing the great change in culture and in physiology they underwent, they began to call themselves “high-elves”.