Also, after Nikea, only three legions retained their librarius : The White Scar, who where closer from Horus, the Thousand Sons, who where caught in the plot of Prospero, and the Wolves who where stubornly attached to their runepriest.
Having those three legions under his heels or destroyed, Horus would have all the more expertimented psykers with him.
Having those three legions under his heels or destroyed, Horus would have all the more expertimented psykers with him.
