E-bladed arrows only give +4 bonus?

[mtkoan]

I had a wizard e-blade some arrows for me, and I was expecting a +20 AS bonus as per https://gswiki.play.net/mediawiki/in...lemental_Blade, but it's not working that way.

You nock a wooden arrow in your black ash long bow.
You fire a wooden arrow at a forest troll!
  AS: +145 vs DS: +61 with AvD: +29 + d100 roll: +80 = +193
   ... and hit for 41 points of damage!
   Nice shot to the head gouges the forest troll's cheek!
   The forest troll is stunned!
The scintillating blue light surrounding the arrow fades some.
Glancing shot.  The wooden arrow flips over, landing behind a forest troll.
Roundtime: 3 sec.
R>stance off
>get 1 arr from quiv
> fire
You are now in an offensive stance.
>
You remove a wooden arrow from in your belt quiver.
>
You nock a wooden arrow in your black ash long bow.
You fire a wooden arrow at a forest troll!
  AS: +141 vs DS: +34 with AvD: +29 + d100 roll: +80 = +216
   ... and hit for 56 points of damage!
   Strike pierces gall bladder!
  That's gotta hurt!
The wooden arrow sticks in a forest troll's abdomen!
Roundtime: 3 sec.

I'm only getting a +4 bonus from e-bladed arrows. Is the wiki wrong, or what's going on here?

[Victorj]

Are you level 25? There's still a level restriction on the enchant of your bow+arrows (like how you have to be level 10 to hold vultite/+20 bonus).

[mtkoan]

Ah, that's what it is. I'm level 13, thanks.