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Nothing personal Dragoon, but I think you can only use combat expertise in melee, which I highly recomend you avoiding for the fight. You can borrow the bow I just dropped if you can use it. Further, where did the creature move to? Did I summon my wolf? If not, assuming there is room behind the creature, I summon the wolf on my turn, and then move to flank. If the wolf's turn goes before my movement, it isn't flanking, though I am on the next round.
Wolf: Med 2HD Animal
HP:13 SP:50' AC:14
Wolf's Will Save: [roll0]
Assuming success, Attack roll=[roll1]
Damage= [roll2]
If hit, trip attempt (opposed roll)=[roll3]