Tunnel Vision (3.5e Trait)

While fighting you focus in on a target but neglect other targets

Benefit: Once each round in combat, you must choose a single enemy. Against that enemy you gain a +2 bonus on attack and damage rolls.

Drawback: You take a -1 penalty to attacks against other enemies and a -1 penalty to armor class against attacks from other enemies.

Roleplaying Ideas: Characters with this trait are extremely focused in combat and may make excellent snipers.