Kraedin,
I can't quote this, but you are not required to use any of your abilities. A rogue who attacks someone w/o their dex bonus does not have to sneak attack that opponent despite being able to. A druid does not have to leave no tracks when walking through the woods.
Anytime an ability must be used, the text will quote that the ability must be used - as with the frenzy ability from the frenzied berserker.
I can't quote this, but you are not required to use any of your abilities. A rogue who attacks someone w/o their dex bonus does not have to sneak attack that opponent despite being able to. A druid does not have to leave no tracks when walking through the woods.
Anytime an ability must be used, the text will quote that the ability must be used - as with the frenzy ability from the frenzied berserker.