derpdidruid |
For further reference the only things that can negate an "on attack special quality" are A: being unable to attack or B:immunity to the condition that it applys (you can't use the trip ability on a centipede) no limits due to how weighed down you are (though if your encumbrance becomes medium you might have problems of a different sort)
So ride away little wolfy rider! Ride away into battle!