Blood in the Water
The Sidhe Brothers
The first knights of the Lady of the Lake
Two faceless and oddly dressed members of the seelie court who responded when the party sailed into the fog to escape with their lives.
With the party not having made a deal of its own in advance to use the Magic the brothers took an odd toll upon the group. They bonded their lifelines together and commanded them that on 8 days in the coming years they would have to survive, no matter the costs. Live or die, they will do so together whether they like it or not.
Two exceptions to this exist:
Gregario: Was told his life will be saved by them in the future. All he knows is it will involve a cannon.
Alonso: Has never met them.