This model was the first actual dinosaur added to the army way back in 2008 and is still my favorite model in my collection.
He was made using the Lizardmen Carnosaur (quite obviously!), some bits from the Command Squad kit (legs, shoulder pads), a cut up Terminator torso (saddle), and a combat shield and WFB Slaaneshi Lord halberd, as well as some assorted Space Marine bits and bobs.
Drop pods rained down on Cephian IV, braving the storm-wrecked skies as the powers of the Warp enveloped the planet in its diabolical embrace. They sped towards the surface, landing among the ruined spires of Hive Ulliter. The black capsules crashed into the earth at the foot of the Cathedral of Paean, erected in honour of the Chaos Gods, the lives of tens of thousands of the enslaved populace expended in its construction. Thousands more had been sacrificed on its altars by the 47th Word Bearers host, and millions would follow.
The pod doors slammed open, and the Storm Dragons 2nd Company lined up before the ruined hab-blocks surrounding the Cathedral. As an orbital lance strike briefly swallowed all darkness in a sea of white flame, the unholy church vanished in a beam of pure energy. The shock wave shook the very foundations of the city, but the Storm Dragons stood resolute in its pummeling force. With grim resolution, the Storm Dragons advanced into the hab-blocks, intent on rooting out all traitors still lying in wait among Ulliter's remains.
Just a little food for thought based on my first experiences with Kor'sarro Khan and why I think he is an excellent addition to a mechanised Space Marine army.
No doubt the most obvious reason to take Khan, your army exchanges Combat Tactics for Outflank. Most people take advantage of this by outflanking their Bike Squads or Assault Squads to get to grips with the enemy faster and without having to slog across the table. Outflank in general is seen mostly as a means to get your assault units in close range more reliably. However, if your opponent castles up in the centre, or deploys in a refused flank, you risk your units arriving piece meal with no further benefit, or on the wrong side of the table, respectively.