Lightning
sofar

A mod that adds thunder and lightning effects.

Lightdead
niwla23

Spawns a lightning over the dedposition of a player when he dies

Tridents
KPCOFGS

Elemental tridents: Fire, Lightning, Wither, Support, and the Master Trident that combines all powers.

Lightning Wand
TrafficSignal2217

A craftable wand that strikes lightning wherever you point it

Sparking Wand Mod
Olaf

Craft a wand with which you can cast a lightning spell. Great for discovering caves.