Warp Lightning Cannon

Strategy Point Cost (40)
Whatever the truth of the cannon, it is clear
that Skaven weapon technology is far beyond
that of the Empire. The sole mercy is that
these terrifying weapons are extremely unreliable.
A blast of warp lightning fires from the Skaven
war-engine. Draw a straight line of up to 120'
Anything in its path takes 6d6 damage, unless
a successful Dex save (15) is made.