Astral Shield

Channelling your concentration through your shield, planar energy infuses a creature of your choice whom you can see granting it a +2 bonus to AC for the duration. As the material component requires a shield this can only be cast if the character casting the spell is wearing one. The caster must be able to see the creature to cast the spell otherwise the spell fails, however after applying the spell only concentration not line of sight is required to maintain it. The spell also works in any case where the caster can see the creature in real time such as scrying or via the aid of optical enhancement. The restrictions on darkness also apply, this spell can be cast in dim light but not in darkness unless the caster can see through the darkness and the creature is within visual range. If the caster is under the affect of any ability or spell which renders the creature "visible" to them (e.g blindsight, truesight etc) the creature counts as visible for the purposes of this spell.