vaan104

you need to add some removal like go for the throat or victim of night. your mana curve is very high you need some ramp of some kind and probably a few more lands. nirkana revenant is cool or crypt ghast isnt a vamp but its a cheaper nirkana

orzhov apostles is awesome but i use athreos as commander
http://www.mtgvault.com/vaan104/decks/athreos-apostles/
this is what i have

thornbite free equips to nighthawk and can deal multiple hits per turn its like a kill spell on a stick

u need athreos, god of passage

add vampire nighthawk and thornbite staff. glissa, the traitor would be good to

get rid of some of the non elf creatures if u want it to be elf tribal, this is my elf edh
http://www.mtgvault.com/vaan104/decks/elf-edh/

extraplanar lens would be good and some stuff to give trample like rancor and equipments. even with mana ramp you should still have around 36 lands

add courser of kruphix?

i made this kaalia deck you can look at it for ideas
http://www.mtgvault.com/vaan104/decks/kaalia-edh/

u have 13 lord of the void listed

you need avacyn, angel of hope, aurelia, the warleader, balefire dragon, iona, shield of emeria, lord of the void

you should use glissa the traitor. thornweald archer is another. elves have problems with flying so you should add some removal song of the dryads is awesome and black has lots more. the planeswalker freyalise is really good to

id drop mass calcify for catastrophe its a board clear if you need it but if you ahead you can use the land destruction to seal a game

if u go casual add the original Counterspell

blasphemous act would be good. iroas, god of victory will be awesome. id also run gisella, blade of goldnight

ill 2nd not using fireball rolling thunder is a good multiplayer option

if u have nykthos his cost shouldn't be a problem and if you cast him you probably win. even if he gets killed right away you can still use his card draw ability before he dies

1-2 griselbrand might be cool

teferri's puzzle box is great in a deck like this

add all is dust