Battle Mage Tactics

(Monster Manual V, page 84, DnD 3.5)

[General]

Through intense training and impeccable timing, you and your allies learn to augment each other's magical attacks when you focus your efforts on a single target.

Prerequisite

Spellcraft 6 Ranks, Arcane caster level 3rd

Benefit

Each time you cast a spell that requires a target to make a saving throw, that target gains a battle magic tactics token after the spell resolves. A creature gains a token whether the creature succeeds or fails, but a creature that avoids a spell through spell esistance does not gain a token. Each battle magic token imposes a cumulative -1 Penalty on saving throws against the spells of spellcasters who have this feat. At the end of the round all battle magic tactics tokens dissapear.