Council of Elrond

here a suggestion:

Dreams of Lore
MP: 2
Permanent event
playable by a sage at a site where Information is playable.
Tap the site and the sage to put this card on the character.
Sage bearer hast +2 to all corruption checks and if he is a diplomat, he may tap for +2 in support for a curruption check in his company.
Worth +1 Marshelingpoint if stored at the Grey Havens.

Way too strong and too easy.

maybe then make it only one MP and 2 if stored?

When I know anything is almost the same as your propisition: it doenst give an extra point when stored, BUT gives a +3 to cc.