A Feast Most Dire

From FFXI Wiki

A Feast Most Dire was an event that took place from Tuesday, November 10, 2015 at 7:00 a.m. (PST) to Monday, November 30, 2015 at 6:59 a.m. (PST).

Players had to receive a Level Cap 5 status, equip the Wyrmking Masque and Wyrmking Suit, then attack Tiamath (West Sarutabaruta), Vrtrance (West Ronfaure), or Jormeander (South Gustaberg). These wyrms resembled their HNM counterparts. Points were earned depending on performance in the 5 minute fights.

Redeeming points would reward the player with the following:

After obtaining the Key Item, Kupofried can teleport to Horlais Peak, Waughroon Shrine, or Balga's Dais to fight against Bahamute, a clone of Bahamut.

Many random rare items could be obtained from this fight, such as -1 cursed pieces.