Arcane Missiles : Arcane Shield

[Chappinhas]

Legendary : Arcane Missiles : Arcane Shield

Your Arcane Missiles becomes Arcane Shield

Arcane Shield: summon 4 arcane missiles that surround the caster, while the shield holds, you gain 2% spell haste and your direct damage single target arcane spell criticals have a 33 % chance to unleash a missile, this effect can occur more than once per spell cast.
When missile Barrage triggers, the shield is resplenished.
Shares Buff slot with Lightning, water and earth shield

[Heyso]

My thoughts:

1. Would that be a shield if all it does is give arcane bonus damages ?
2. All shaman shield have a on hit effect.
3. Maybe give 2% spell hast per missile around caster, more significant.

I think this has potential, it is the story of an Arcane mage influenced by a Shaman.