I like the direction the deck is going in but I feel that you could be doing more with the black in the deck. If you use cards like
deadbridge shaman and
eyeblight assassin then you can add some more aggressive field and hand control. Also for the creatures that have enter the battlefield effects you can use
roaring primadox. He can constantly bounce your elves so can get maximum output from individual creatures. Also yeva forcemage would be a good addition to this deck as well.