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From D&D Wiki
|This material is published under the OGL|
|Casting time:||1 standard action|
|Duration:||1 min./level (D)|
Shield creates an invisible, tower shield-sized mobile disk of force that hovers in front of you. It negates magic missile attacks directed at you. The disk also provides a +4 shield bonus to AC. This bonus applies against incorporeal touch attacks, since it is a force effect. The shield has no armor check penalty or arcane spell failure chance. Unlike with a normal tower shield, you can’t use the shield spell for cover.