[@RoflsMazoy], I have some modifiers for Narrative Role of Familiarity to suggest.

[hider=Modifiers]
Basically, Narrative Role of Familiarity is stronger when:

1.) There is a set number of 'slots' in the organization to be infiltrated and one of them is empty.
2.) A member of the said organization or someone that said organization trusts vouches for Ascot.
3.) If false evidence supporting the altered memories of the infiltrated organization is planted; the more believable, the better.
4.) The infiltrated organization does not have a set limit of members at all.

However, Narrative Role of Familiarity is weaker when:

1.) There is a set number of roles in the infiltrated organization and all of them are filled up.
2.) If a member of the infiltrated organization is naturally paranoid to the point of distrusting their own memories.
3.) If Ascot is called upon to use skills expected of a member of the organization, but he does not have.
4.) If [i]someone else[/i] uses memory-altering magic on the infiltrated organization.
[/hider]