Sentry
Unit — Mech Drone • Cost: 2 • ATK: 3 • HP: 2
Sparkshot, anti-air
Prevent the first damage per turn that a spell or ability would deal to one of your patrollers. (Choose randomly if multiple patrollers are damaged at once.)
Purple • Present Tech I
Card-Specific Rulings
The damage done by the sparkshot ability and by the Tower add-on are both combat damage. But they are also both "abilities" so Sentry CAN prevent their damage. — Sirlin, 03/11/16