Air Chains (3.5e Spell)
From D&D Wiki
|Enchantment [Chain Spell]|
|Casting time:||1 standard action|
|Range:||Short (25 ft. +5 ft. per 2 caster levels)|
The target gains a +1 armor bonus to AC for each level this spell was cast at.
So if this spell was cast as a level 5 spell, they get +5 armor bonus to AC.