I also agree that 18 pillars is a bit much.
I would suggest losing 6 pillars, and adding:
2 Phase Shields
2 Electrocutors
2 Thunderbolts
I like the thunderbolts, as they can remove an early Elite Otyugh threat, or provide 'final blow' non-creature damage to your opponent if he slows your creatures down with shields (and you're near the kill).