Friendship Is Magic
Ultra rare0.6%ObjectiveOptionalSingle-player
Use a friendship hook on a different-faith ruler involved in the Iberian struggle
Needs Fate of Iberia, and it's specifically the BEST FRIEND hook (from an Oath of True Friendship) - ordinary friendship doesn't cut it. Ready-made setup: Alfonsu III of Asturias, 867, starts friends with Sheikh Lubb of Najera - a Muslim, struggle-involved ruler who'll usually accept the Oath. Swear it, then spend the resulting hook on him. A few in-game years, and a trivial add-on to any involved-Christian struggle run like 