Places of power boost whichever sign is associated with them for a pretty lengthy period of time. However, they also confer an additional skill point that can be used to upgrade Geralt's skills!
The sequel to the award winning Hellblade: Senua’s Sacrifice, Senua returns in a brutal journey of survival through the myth and torment of Viking Iceland. Intent on saving those who have fallen victim to the horrors of tyranny, Senua faces a battle of overcoming the darkness within and without.