[2.3] Elementalist Freeze and Burn, Fire Trap + Ice Spear

Why Fire Traps + Ice Spear?

Because Mastermind of Discord
Damage Penetrates 25% Cold Resistance if you've used a Fire Skill in the past 10 seconds
Damage Penetrates 25% Lightning Resistance if you've used a Cold Skill in the past 10 seconds
Damage Penetrates 25% Fire Resistance if you've used a Lightning Skill in the past 10 seconds

Trigger by Orb of storm, Fire Trap and Ice Spear

Why Elementalist?
Only one reason because Beacon of Ruin

Share freeze and burn

Passive Tree
Play with Ice (Ice Spear is Mandatory)
http://bit.ly/1sENBUC

Play with Fire (Fire Trap is Mandatory)
http://bit.ly/1sV4wmB

Play with Staff
http://bit.ly/1TN4bux

Skill Gems
Ice Spear + Spell Echo + PCoC + GMP + Cold Pen + Controlled Destruction or Critical Damage
Fire Trap + Multiple Trap + Fire Pen + Increase Burning Damage/Critical Damage/Trap and mine damage

Might use Death's Harp for global critical strike damage 150% or end game staff for 2 equipment for 6L

Staff end game can be The Searing Touch or PoH

Video The video is version 1.3 and use Ice Spear only.
in 2.2 Ice Spear seem like abandoned build. I want to resurrect in 2.3

https://www.youtube.com/watch?v=tA0pQGgjLXU