As an extra cost, exhaust X Gliders in your berth.
Deal X damage to each of your opponent's crew in one battle.
Explained
As an extra cost, exhaust X Gliders in your berth.306.5d
When you deploy it, choose how many of your ready Gliders that aren't dispatched to exhaust, at least one: that number is X. They stay exhausted until your next stoke phase. A crew that came on board this turn can pay it too (306.5d).
Deal X damage to each of your opponent's crew in one battle.705.7, 801.9a
After dispatch, choose the mothership battle or an expedition where your opponent has crew. Each of their crew there takes X damage; your own crew there don't. Plating takes it first, damage to hull stays, and a crew left with no hull is destroyed at once (705.7).