Spades: Threaten them with the Eight of Spades maneuver.

Enough of this poppycock! You tell them that if they don't spill the beans you'll use the legendary Eight Of Spades maneuver on them! Across the cosmos all fear the wrath of 8S, you tell them. None have survived against it, you continue. The dwarves are terrified.

StartBackArchiveNext: ...Last