Bestiary 3 | Monsters | Derhii | Special Abilities | Knockdown
When a
derhii confirms a critical hit with a two-handed weapon, it has a chance to
knock an opponent
prone in addition to the damage dealt by the critical hit. If the
derhii's confirmation roll exceeds its opponent's CMD, the opponent is knocked
prone as if from the trip combat maneuver. This does not provoke an attack of opportunity, nor can the
derhii be tripped if the confirmation roll fails to exceed the CMD.