Lightning Brand in particular should get some attention, as you'll be replacing Prismatic Bolt with Shockbolts in many scenarios. Other than picking up Death's Bounty (Storm), which you should prioritize immediately until it hits Tier 2, and Shockbolts (Storm), this is a good time to focus on your passives.

As far as I can tell, across all four classes, it is the most useless skill in the game. ДЄny spare points you find yourself with can go into Elemental Attunement (Inferno) and Lightning Brand (Storm). All the while, flood the affected region with Prismatic Bolts. By combining it with Hailstorm, you can start to create vast areas of static damage, or layer them to spell impending doom for everything in a small area. Once you hit 14, grab Thunder Locus (Storm). Combine it with some points in Charge Mastery (Inferno tree) and Hailstorm (Frost tree). Your core skill starting off is going to be Prismatic Bolt (Storm tree). And strength can come in handy if and when you do run out of mana and have to whack things. Dexterity gives you dodge chance, which never hurts. The remaining two points can be distributed however you want to shore up your other stats: don't let Vitality get too far below two thirds of your total level if you don't just really enjoy dying. Put at least three stat points into Focus every level until it gets up around 90 (ignoring gear). Remember three seconds ago when I said you'll need a lot of mana? Still true.

Go with whatever will get you the most damage output and mana sustainability. I like staves, but this build can work just as well with dual wands. It lacks stun attacks, but you should be doing enough damage over a wide enough area that your crowd control is essentially: 'The crowd is now dead.' This build will give your enemies nowhere to run and nowhere to hide, flooding the screen with torrential damage in enough shapes and colors to make the National Weather Service throw up their hands in defeat.

Torchlight 2 synergies warlock build