drnuncheon
Explorer
ThirdWizard said:So arrow slits give you +4 AC? Or is there more that's being left out?
From PHB 152:
Varying Degrees of Cover: In some cases, cover may provide a greater bonus to AC and Reflex saves. For instance, a character peering around a corner or hrough an arrow slit has even better cover than a character standing behind a low wall or an obstacle. In such situations, the DM can double the normal cover bonuses to AC (to +8 and +4, respectively). A creature with this improved cover effectively has improved evasion against any attack to which the Reflex save applies. Furthermore, improved cover provides a +10 bonus on Hide checks.
There's also a note that 'soft' cover, like an opponent, doesn't help your Reflex saves.
J