3 Harrow points each for this AP.

Harrow Point Uses
In “Seven Days to the Grave,” the PCs are faced with
numerous situations where health and resolve win the day,
be this avoiding the contagion that plagues the city, resisting
the toxins and poisons possessed by many of the people
in the adventure, or enduring the implied race against the
clock to find a cure for blood veil before it kills thousands.
During this adventure, a character can spend his Harrow
Points in the following ways.

Constitution Rerolls: Spend a Harrow Point to reroll
any one Fortitude saving throw, Concentration check, or
other Constitution-based d20 roll. You must abide by the
new result (although if you have additional Harrow Points
remaining, you can use them to attempt additional rerolls).
Fast Hit Point Recovery: Spend a Harrow Point after
resting for a minute to catch your breath and recover from
your recent ordeals—you heal a number of hit points
equal to your class level and 1 point of ability damage (but
not ability drain) each time you do so. You may spend a
Harrow Point in this manner once after each encounter.
Damage Reduction: Spend a Harrow Point to gain
damage reduction 3/—. This damage reduction persists
for the duration of the encounter in which you spent the
Harrow Point.

The Chosen
In addition, the card a PC draws during the choosing has
special qualities during this adventure. Each of these cards
is tied to a specific encounter in “Seven Days to the Grave,”
and when a PC who drew that card reaches that encounter, he
gains a +2 bonus on all rolls modified by Constitution and a
number of temporary hit points equal to twice his character
level. These bonuses last for the encounter’s duration.