Grak Beastbasha

Warboss Grak Beastbasha of the Red Snakes tribe was once visited by a vision from Gork (or possibly Mork) that inspired him to lead a horde of more than five thousand sun-crazed Savage Orcs in a march through the jungle to claim the ruins of the temple-city of ltza Chiquita. On their way, they were regularly waylaid, led into the pathway of hunting monsters, and picked off mercilessly by poisoned darts. It took only seven Chameleon Skinks to ensure that not a single Greenskin from that formidable horde survived. Such are the dangers of Lustria.

Source
pg. 39
 * Warhammer Armies: Lizardmen (8th Edition)