Causes dark orbs to pursue any nearby enemy, exploding and dealing Dark damage upon contact.
Affinity's appearance is very similar to Homing Soulmass or Homing Crystal Soulmass, and works in the same way. If the Intelligence stat is not very high, the damage will be insignificant along with the large amount of FP it uses.
As with similar spells, Affinity is useful to inflict extra damage to players, but is slower and can avoided with correct timing. This fact and the FP cost makes this a very unpopular spell to use.