This ability altering weapon can be found in the Blackrose Prison Arena, if you are looking for a guide check out the Blackrose Prison Arena Guide.
Perfect Wild Impulse
LEVEL 50 - CP 160
(2 items) Adds 1487 Spell Penetration, Reduce the cost of Impulse by 10%. Impulse places lingering elemental damage on your targets, dealing 3333 Flame, 3333 Shock, and 3333 Ice Damage over 8 seconds.
Magicka Nightblade Build PvP for Elder Scrolls Online
Magicka Nightblade Build PvP for Cyrodiil & Battlegrounds, this build is optimized for Battlegrounds. Elder Scrolls Online ESO.
Warden Main-Tank: Guardian
The Guardian is a Warden tank build for The Elder Scrolls Online. The warden brings unique buffs and healing capabilities to the table as a tank.