Well. I assure you its not op(my new catchphrase.). 
It basically my own breed of dinosaur mixed with dilophosaurus, troodon, achillobator, and a few choice others. It is not completely accurate, as ive found people dont know their damn dinos. But anyway, its a small pack of them called 'Adillodon' and the are very fast and intelligent, like most dromaeosaurs, and they are smarter than those, and smarter than most humans. Also dromaeosaurs are the actual velociraptors. being average 11ft long and 3 ft at hip.
They are extremely deadly together, being able to kill normal unarmed humans by themselves extremely easily. While not specializing in strength, are stronger than any human who is not riddick and higher. They can also communicate very quietely from distances of up to 60 feet.

They are also capable of evolving and changing after every two or three fights, adding new evolutional adaptations based on the problems had in said previous matches.