Brain Freeze! it's in your colours, you can easily play 15 or more spells in one turn, and provides you with an alt win con. failing that, the trusty Coat of Arms will help your elves survive a Pyroclasm or other burn spell. With the amount of draw you have, you'll only need one copy of each in the deck.
one more thing... if you're playing against an opponent with board wipes such as Wrath of God, sideboard in Caller of the Claw. nothing beats the look on their faces when you slap it down after they think they've just hosed your deck.
Apologies, it says legacy for some reason next to your deck title?!
Many Modern legal cards are marked as only being Legacy legal. The admins are working towards fixing this problem from what I have heard.
I would take out the blue splash actually. Regal force just seems like a better draw engine, and you can fetch it up with summoner's pact, along with any other combo piece you would need. All the hinterland harbors do is lower the efficiency of your elves that rely on doing things to forests.
I understand the argument with Regal Force, but the mana production for Modern elves is nowhere near as great as Legacy elves, so I'm worried that it will take too long to get the draw going with such an expensive draw engine. I think that I will play test him as a 1 of with a few Chord of Callings, but I want to keep Distant Melody. The blue is extremely easy to splash for in this deck and the only cards I use that relies on an actual forest is Arbor Elf and Scryb Ranger. You never open with Hinterland Harbor, so you will always have at least 1 forest.
The trouble is that you are dedicating 6 cards to be able to play 4 cards that could be replaced by other cards. You would actually change 10 cards in your deck to improve them if you didn't play with distant melody.