438a3a28_es___Dungeons_and_Dragons_Wiki__Perk_Benefit
[Perk Name] Scrambler [Pro Perk Benefit] If you trigger an enemy trap (such as a claymore or brick of C4), then it doesn't go off until one round later. [Perk Benefit] 
When within 15' of you, Enemy GPS and radios do not work.
CoDnD- Call of Duty 3.5 (3.5e Sourcebook)/Chapter 2: New Rules - Dungeons and Dragons Wiki
Perk Benefit