Astral Period (Shard Ne'Vaal Supplement)

The Astral Period is when a great deal of Outsiders came to the Old World. Already there were beings like primitive troglodytes, basic animals, and such, and they soon came in contact with beings like the shardmind, the gith, as well as extraplanar influences from the Feywilds and more. Gates opened and new creation began. It is believed that this period was when Ose first came as a mortal to this world.