Frozen is a keyword in Shadow Era.

Effect wise, Frozen does the exact same thing as Disabled (affected allies/heroes cannot attack, defend, or activate abilities), however Frozen obviously has the different flavor and appearance of ice, in addition to generally being more temporary compared to disabled. Various cards are able to freeze or interact with frozen allies/heroes. Any frozen ally/hero shows an iced over animation while frozen. Note that frozen is different than Ice damage, although they are often on cards together.