Spell Leech (3.5e Maneuver)

''You invade your target's mind unnoticed and find magic there. Time for a purge.''

As a full-round action, you invade the mind of any character within Medium range. When you do, you learn all of your opponent's variable abilities - feats, skill tricks, spells known or prepared, powers known, and maneuvers readied. For the rest of the encounter, whenever you use any effect on that opponent that would deprive him of one or more of these abilities, and he would normally be allowed to choose which ones to lose (for instance, a wizard choosing which spell slots are lost to a mind scrub attack), you make that choice instead.

If your target is a spellcaster, you may concentrate on the connection to maintain it and delete one spell slot per round. The target continues to act as normal, but gets no save to resist the effect. He is also unaware of you draining the spells from his mind, until he attempts to cast a spell. Once he does, he can realize what you're up to by succeeding on a Spellcraft check (DC = 19 + the spell level of the highest-level spell slot he has remaining + your Int modifier). If he fails, he remains unaware until the next time he attempts to cast a spell, which allows him to make another Spellcraft check. If he tries to cast a spell which he lost to this maneuver, his action is wasted and nothing happens, but he gains a +10 bonus to the Spellcraft check. Once he is aware that you are driving spells out of his mind, he is allowed to attempt a Will save (DC 19 + your Int modifier) each round to hold on to his magic; if he fails, you get to delete a spell slot on that round, but he gets to make a new save next round. However, you can still attempt to delete spells each round once your target is aware and able to resist. Your target does not gain any knowledge of your whereabouts when he discovers that you are draining spells from his mind. If you manage to delete all of your opponent's spell slots, this maneuver immediately ends. If your target did not discover you at all over the course of the maneuver, he remains completely oblivious to his lack of spellcasting capacity until he actually attempts to cast a spell, at which point he automatically realizes that he has no spells left.

This maneuver is a supernatural ability and provokes attacks of opportunity. If you are interrupted, you must succeed on a Concentration check to initiate the connection or continue wiping spell slots.

Even though this is a scrying effect, the only form of anti-divination of level 8 or below that works at all against spell leech is mind blank. If you use this maneuver against a creature under the effects of mind blank, you must succeed on an initiator level check against a DC of 18 + the caster level of the mind blank to break through. If you fail, the maneuver has no effect. If you beat the mind blank, you may wipe spells as normal, and mind blank offers no further protection. Anti-divination effects of 9th level or higher work normally against spell leech.