Irontide Key

Irontide Keys drop from the following mobs in Stormsong Valley:
 * Chief Mate Katie Six-Toes
 * Irontide Coin Hauler
 * Irontide Cook
 * Irontide Crusher
 * Irontide Cutthroat
 * Irontide Keelhauler
 * Irontide Slaver
 * Irontide Trickshot
 * Ookin Rum Guard

Objective of

 * They are used to unlock Irontide Cages for A Pirate's Life For Me.