In the hands of noobs, useless! in the hands of pros, game changing!
One of the greatest CC champs in lol.
Anivia is DOMINATOR of mid lane because of her slow-stun & aoe farming,
everyone got powerfull skills but anivia's burst dmg x2 is unbelievable!

Pros:
slowing movement and attack speed by 20% aoe (R)
slow+stun (multiple target) (Q)
WALL game control! vision-block (W)
great damage x2 (E)
passive guardian angel
Cons:
hard to master Q/W/E
slow champion ( without runes)
wall negative effect ( save enemies - kill team m8s)
her passive is useless unless u can escape.
mana problems - need blue buff

Greater Mark of Insight x9 : Magic Penetration , Anivia as a caster needs penetrate all magic resist untill mid game.

Greater Glyph of Force x9 : dmgx2 doulbe runes ;p

Greater Seal of Clarity x9 : Mana rege, anivia needs mana! Full MP useless Anivia - No MP dead Anivia

Greater Quintessence of Swiftness : with these 3 runes you delete "slow champion" one of biggest Cons ! u can harras at early and escape easier in mid. Also take better position in a team fight.

15% spell penetrate of target's magical resist ( perfect )
5% xp bonus
3mp rege/5
30% more blue buff
3% movement speed -> 7.5% (with runes)
9% cooldown -> 14.85% (with runes)
+refresh ingnite-flash

we start with boots + 3 potions -> Catalyst ( movement speed for harras+escape)


(hp-mp bonus every level for better lane control !)
u have 1600 gold, buy Rod and after 860 Wand, 1140 gold for DeathCap


After these u will need 740g Negatron Cloak and 860g wand,
u need catalyst for mp/hp so dont make veil.

Fix all Core items Sorcerer's Shoes , Rabadon's DeathCap , Banshee's Veil , Void Staff

Buy rod+chest for a Zhonya's Hourglass
*if enemies are heavy ap u will need a Abyssal Scepter or if they are heavy AD Frozen Heart (nice combo with R )

if u need more AP u can make lich bane or archangel's staff

I prefer Flash- Ignite combo like ezreal game-play
Flah can be used for escape or kill.
Ignite :every time someone running with 4% hp or enemy Vampire(hp drainer), crazy hp rege or healer!

You should used Ghost-Flash for more survivability.

Frost bite before glacial storm ,press R when dagger is on air! none can escape this combo
Wall Before Flash Frost more chances for a perfect stun + out of position!

A perfect combo (1vs1) W+Q+E+R+E(without ignite) will do about 900-1100(with-without rod) dmg at lv 8, so enemy will go back or be killed.

A good wall can win a fight @ Nashor - Dragon . Also Block enemies inside of your tower or outside of their tower, u can block an enemy for saving a teammate!

Wall can be used for interrupt all channeling spells like nunu's katarina's malzahar's ulti etc..