I'm not sure if the Archdam, Permeter, Freezer, Heater card combo is worth using for a Sac/Shield Paladin.
The combo bonus is as follows:
int + 1
str + 1
def + 2
10% more damage with Shield Chain and Sacrifice
Reduce casting time by 10%
Archdam-armor, gives: + 10 ATK, increase casting time 20%, holy property on armor (pally/saders)
Permeter-head, gives: 15% more resistance to shadow and undead
Freezer-foot, gives: Max hp + 300
Heater-accessory, gives: crit rate + 3, perfect dodge + 3 (swordsman class)