Fake cast means to cast your spell ( Flash of light, Regrowth, Frost bolt, Unstable Affliction..etc) at your opponent to a certain point, then cancel it whenever you want to try and get an interrupt from your opponent (Pummel, Kick, Rebuke, Spell lock..etc). Interrupting is just the opposite by stopping their cast without getting faked. I am wondering what people like more, fake casting a player, or interrupting a cast from a player more and why? Also, which one do you feel is much harder to accomplish?