The Carnosaur itself is unmodified except for the custom-sculpted base. The rider is a modified Kroq-Gar. The head was sawn off and replaced with the head from the Temple Guard sprue. I cut the fingers off the left hand and used green stuff to resculpt it into an armored gauntlet that looks wrapped around the handle of a shield. The shield itself is from a bits pack ("Lizardmen Oldblood Shields") available through Games Workshop. The big sword is custom sculpted from a piece of plasticard for the blade and green stuff for the details. Finally, I took a couple of identical banner-top type bits, cut the skull off one, and put them together into a round shape to make the totem (and cut down the top of the spear that serves as the pole).