Explosive victims Fort save or stunned 1 round; -2 attack rolls 1 round.
The character can tune explosive charges for maximum concussive
effect. When the character detonates an explosive, all targets
damaged by the blast must make a Fortitude save (DC 10 +
character's INT modifier + character level/2) or be stunned for
1 round. Even on a successful save, targets suffer -2 to attack
rolls for 1 round from disorientation.
Rules Reference
Field
Value
Combat Action
Category
combat
Runtime / Classification
passive-conditional
Runtime / Duration
Runtime / Effect Kind
atk_bonus
Runtime / Magnitude
Runtime / Trigger
explosive targets: Fort save (DC 10 + INT mod + level/2) or stunned 1
Runtime / Uses
Notes
Special: The stun effect applies only to targets that take damage from the explosion. Creatures immune to stunning or with no discernible anatomy are immune. The -2 attack penalty applies even if the target saves. This feat does not stack with itself on the same target.
Benefit
condition: explosive targets: Fort save (DC 10 + INT mod + level/2) or stunned 1 round
Field
Value
condition
explosive targets: Fort save (DC 10 + INT mod + level/2) or stunned 1 round
modifier
0
target
concussive-stun
condition: even on save: -2 to attack rolls for 1 round