You can deliver particularly potent bludgeoning attacks.
Benefit(s): When you score a critical hit with a weapon that deals bludgeoning damage, in addition to any other critical hit effect you would apply, you also apply the knockdown critical hit effect. If the attack would already apply a knockdown critical hit effect, you can choose to also move the target 1d4×5 feet directly away from you.
Starfinder Character Operations Manual © 2019, Paizo Inc.; Authors: Alexander Augunas, Kate Baker, Simone Dietzler, Jennifer Dworschack-Kinter, Leo Glass, Sasha Lindley Hall, Amanda Hamon, Vanessa Hoskins, Jenny Jarzabski, Jason Keeley, Lyz Liddell, Luis Loza, Ron Lundeen, Crystal Malarsky, Robert G. McCreary, Conor J. Owens, Joe Pasini, Owen K.C. Stephens, Jason Tondro, and Landon Winkler.