The Aetherborn are a new tribe. I don't see a one drop, but with eight different creatures, I am sure I can come up with a Standard Constructed deck. I don't see a Lord (that gives members of the tribe a +1/+1 boost).
I wish there have been more Gremlins. It would be really cool to build a Gremlins deck. There have been all of two Gremlins issued to date, one in Mirrodin Besieged, and one in Antiquities. Because there are only six, this is the only 24 creature deck you can build now in Standard Constructed.