[quote][b]Posted by:[/b] rst7503 The Tyranids and Orks will both profit from war. For every Ork and Tyranid slain, the Tyranids can take the biomatter and decompose it and reform it into more Tyranids. For every Ork killed, the Orks increase in number with more spores. It's a perpetual battle that only the Necrons, with their life-scouring technology (like the World Engine and Necron Abattoirs) or time-travel tools, or true Empyrean Chaos can hope to beat[/quote] But all the Orks needs is for a Chieftain to proclaim his weapon the 'Hive Smasher' or something, and WHAM, Orks quickly wipe out the Tyranids. All they need if for a large enough WAAAGH! and it's all over.