• -1525 DR
  • Merrow and koalinth band together into the Horde of Bloodtide, only to be defeated again by the mad King Kyron of Thalorlyn. The rebel Republic of Tivaan rises among the merfolk to unite the Hmur Plateau against Aryselmalyr's mad ruler, once spies reveal that Coronal Essyl and King Kyron have allied with kraken to supplement their power. »

  • -1522 DR
  • The Four Arcana of Humbar, the usually isolationist morkoths from the deep waters below, ally with Tivaan after numerous attacks from the coronal's (Essyl Merynth) forces. »

  • -1509 DR
  • The First Shalarin Passing:
    The obyrinth lord Dagon, eldest of Those Who Sleep Below, sets in motion his plan to control the depths of Seros. The first wildtide portal opens, and the shalarins arrive within Seros from the Sea of Corynactis, their home on the far side of Toril, west of Maztica. Immediately attacked by the magically attuned Emerald Eye and the madmen Kyron and Essyl, the shalarin lose more than 17 percent of their number. Tivaan, the Dukar orders, and Hmurbar all rush to the aid of the shalarin and quickly gain powerful allies. »

  • -1506 DR
  • King Kyron dies at the hands of the Dukars, who take the Emerald Eye of Kyron into their custody. The merfolk traitors either return to Tivaan or remain allied with Coronal Essyl. »

  • The Fourth Seros War
  • -1399 DR to -1396 DR
    The Hmur Plateau becomes overrun by a horde of koalinth and merrow, ending the peaceful merfolk Republic of Tivaan. A desperate mermaid steals the Emerald Eye of Kyron from the Dukars' Tower at Myth Nantar to drive the horde off the plateau, only to become corrupted by its power and lead the horde herself against her remaining people and the rest of Seros. »