PRISM TANK.
This is a great powerfull tank you may only need a small amount of these to create a massive dent in your enemy.
The cannon is based on the prism tower once you hit an enemy unit it will branch off to nearby enemy units and stike them aswell.
If youre enemy likes to send large groups of infantry to youre base just simply place one of these on the edge of youre base and watch the infantry fall like fly's.
GOOD LUCK.