Darius

Wow, I didn't notice bloodrush+birds combo, nice one!

You got a point, Ezuri and Genesis Wave are a good way to spend your mana.

I never really understood the use of Birds of Paradise outside of a triple colour deck.
I would remove those and add high power creatures.
Oh, and one mountain is a bit risky.
Besides that it's pretty solid if you ask me.

I really think that you should add more high-cost creatures.
You got a huge influx of mana with all those elves and it'd just be a waste.

I would add more stronger creatures.
Some more high-cost beasts would be easy to summon with all those mana abilities.
And have you thought about adding Door of Destinies?