IF you are specced protection and have the rage reduction talents, you can gain rage by using heroic strike. Use Glyph of Heroic Strike - Item - World of Warcraft and Glyph of Revenge - Item - World of Warcraft you actually gain 10 rage each time you crit with heroic strike. Combine that with the talent Incite in the tier 2 protection tree and you crit almost everytime you do heroic strike, and gain rage on it.