Pyros
<Silver Donator>
Someone on reddit posted a lightning build but he dual wield both lightning swords(thunderfury which procs a chain lightning and some other sword which makes mobs that take lightning damage do damage to mobs around them). With those you can just whirlwind and destroy everything apparently. The stun ring would be insane with those 2 swords though. Really love those elemental synergy legendaries, makes for some cool builds, sadly it also means they're hard to make since they rely on multiple legendaries which are purely random drops. But I guess you just farm with whatever you like until you get enough legendaries to do specific builds on other stuff.