Shadow Screen (Shadow Power)
From D&D Wiki
|[[3.5e Abjuration Spells|Abjuration]] [Force]|
You call upon the shadows to protect you and a shadowy barrier moves to block any incoming attacks. While you have Shadow screen prepared it grants you a +4 shield bonus to AC. You incur no armor check penalty, no speed reduction, and no arcane spell failure chance from this effect. This is a force effect. Shadow screen is a supernatural ability.