Natural Alliances

As Unlikely Alliances enters the battlefield,
choose a two creature you control with one
or two creature types.
Creatures you control are the chosen types in
addition to their other types. The same is true
for creature spells you control and creature
cards you own that aren't on the battlefield.
"Well, I seem fighting together, they're sort of
kin makes sense if you think about it." - Garruk