I think that Dragon element Ulund will be a very powerful unit, especially with opportunity and bloodlust. Combined with Arrowbait for bloodline tribute, I can see that legend getting way out of hand if Final Rest is not at play.

I think the 0mana cards will be useful, but I'm curious to see how much of a drawback the bloodline pact really is in practice. Some really nice bloodline synergies with the rare archons from CA too!