Sanction Magic (3.5e Feat)
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 Sanction Magic [Divine]
Your divine lord gives and takes the power over magic.
Weaken: Make an opposed caster level check against your target, using your cleric caster level + Charisma modifier. If you succeed, your enemy's caster level is reduced by your Charisma modifier (minimum 1).
Boost: You increase the caster level of one arcane caster by one. You may use this ability on yourself.
Both effects last for 10 rounds (1 minute). The caster level modifier stacks with other abilities that change the caster level, but not with itself.