Lightning..

Thanks to Dr Death for clarifying lightning's abilities

Lightning: This is tricky. It's got more damage than cold, the reduced parry
rate, which allows you to deal more damage to targets, and wind walk, which I
just can't seem to get enough of.
Unfortunately, the reduced parry effect is only a chance of happening, so
they'll be taking reduced damage otherwise. The damage is still nice though,
all other things considered.
The secondary ability increases the damage dealt by your force based attacks.
Either the imbue or the nuke, both appreciate the bonus given by Piercing Force.
The third ability is probably the best ability in the game. Wind walk. It
increases your move speed for 6 minutes at level 1. Also in the third ability
is teleport. The ability to move to your destination in the blink of an eye.
This is really helpful for armor wearers, who suffer a reduced movement speed.
Increased Dodge in both an active ability and in a passive ability makes
lightning an ideal choice for anyone who uses a shield.

Strongly Recommended for: Garment, Protector, Armor, Swords
Recommended for Garment and Protector because of the effect those armor types
have on magic.
Recommended for Armor because of windwalk's ability to offset the movement
penalty.
Recommended for Swords because of the speed at which swords hit, increasing the
chance of inflicting paralyze or stun.
http://www.gamefaqs.com/computer/doswin/file/930711/43300