An aggro deck with fliers in mind. Establish an early presence with low-end fliers, then pump them with Favorable Winds. Cast Out and Ixalan's Binding act as removal.

Admittedly, the Dreamcaller Sirens were in builds where I was experimenting with black and esper and had more pirates. Not certain what to take out with the reduction of pirates.

Any suggestions/constructive criticisms are welcome!