Source Galaxy Exploration Manual pg. 17
Level Required 6
You can urge your companions to avoid killing blows at the last second. To use this ability, you must be within 60 feet of both an ally and your ally’s target, the latter which must have taken damage from a nonlethal attack within the last minute. If your ally would reduce the target to 0 HP—and the attack doesn’t deal damage that equals or exceeds half the target’s maximum Hit Points—then, as a reaction, you can have the target merely fall unconscious from the attack as though the attack had dealt nonlethal damage.
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