You find ways to take advantage of close-quarters environments.

Encounter   ✦     Martial
Minor Action      Personal

Effect: Until the end of your next turn, you gain partial cover while you are adjacent to a square of blocking terrain, and any enemy that misses you with a melee attack while you have partial cover grants combat advantage to you until the end of your next turn.

Published in Into the Unknown: The Dungeon Survival Handbook, page(s) 13.