You fix your attention on one opponent to the exclusion of all other foes.

Encounter   ✦     Martial
Minor Action      Close burst 5

Target: One creature you can see in the burst

Effect: Until the end of your next turn, you gain combat advantage against the target and a +2 power bonus to all defenses against the target's attacks. You also take a -2 penalty to attack rolls on attacks that do not include the target.

Published in Into the Unknown: The Dungeon Survival Handbook, page(s) 10.