Talk:Energy Siphon/@comment-5277710-20130714100123/@comment-98.213.187.35-20130720051255

AFAIK, all aura "costs" give capacity rather than taking it.

If the polarity matches, it gives double capacity.

If it does not match, it gives less capacity, but the gain is still positive.

I haven't levelled my auras yet, but a level 0 rejuvenation has base 'cost' 2, gives me 1 capacity in a non-matching slot (my Loki has -), while my enemy radar gives me 4 capacity with the same base 'cost', since the polarity matches.

Recently added are up and down arrows by the cost number to make it clear what direction the capacity changes. Not reflected in the wiki image since the change is recent (at least 3 days old, as that's when I started playing).