Question about destruction staff

Gulnagel

So looking at builds and one thing that caught my intention was a build made by Alacast where he says you need a destructionstaff ability on both bars. I run dubble fire destuction staff. But to get the benefits from the destruction staff passives it says you only need the staff equipped not the skills.

Or am I missing something, please enlighten me on this matter.

Lightspeedflashb14_ESO

You are missing something. Read the passive all the way.

http://en.m.uesp.net/wiki/Online:Ancient_Knowledge

. Ancient Knowledge II: (With Destruction Staff Equipped) Gain bonus effects based on your staff type while you have a Destruction Staff ability slotted: Flame Staff increases your damage done with single target abilities by 8%. Lightning Staff increases your damage done with area of effect abilities by 8%. Frost Staff reduces the cost of blocking by 36% and increases the amount of damage you block by 20%.