Card Abilties
Preemptive Fire
At the beginning of your opponent's Attack Phase, add 1 damage to each enemy unit within 3 clear straight spaces.
Unit Background
Sentry Cogs were the first machines the Inventor created with an assist from his summoning stone. They were originally all refits of his manually operated sentry cannons, though the more recent models have seen some refinement. They aren’t as good as a Dwarf gunner, but they are cheap to make and easy to repair.
Card Strategy
The Sentry Cog is a unique unit that cannot move, making it risky to build unless you ensure it cannot be easily ignored. If opponents are forced to spend resources to counter it, the Sentry Cog becomes extremely efficient, delivering free damage every turn. Its Preemptive Fire ability deals damage in all directions, adding up quickly, especially given its 3 life for just 1 cost. You should build a Sentry Cog whenever you can ensure the opponent cannot simply bypass it.