Karl had been silently observing the entire battle.
He wished the Fischer family would grow and thus had not given any casual reminders.
Every reminder would consume spiritual power, and bestowing favors too frequently would devalue their worth over time.
Now Karl finally sensed fully that the mysterious rare artifact carried by the evil cultist was pulsating with spiritual fluctuations!
It was that one!
"Tainted Blood," a treasure-class rare artifact.
Its form was that of a beautiful and delicate gemstone constructed from scarlet blood, akin to a stunningly beautiful blood-red rose.
Once carried by the user, it would automatically activate an extraordinary effect in times of severe injury, greatly strengthening the body's physique for several minutes, equivalent to approaching the strength of mid-level Transmutation.