Both these require you to have finished another scenario before they show up.
Dagger of Duimenwood - Go to Duskside, finish Defend Duskside then win Raid Darkelf Caravan. +5% to hero's assassination chance
Lord Bane's Curse - Go to Skullguard Keep, finish Secure Skullguard Keep then win Lord Bane's Curse. +50 damage vs minotaurs.
I play the Conquest Campaign without any game mods, so I can't be sure these answers apply if you are using The Protectors.