Chain Spell [Metamagic]
REQ: Any other metamagic feat
You can chain any spell that specifies a single target and has a range greater than touch. The chained spell affects that target normally, the arcs to a number of secondary targets equal to your caster level. Each arc affects one secondary target. You choose the secondary targets as you like, but they must all be within 30’ of the primary target, and no target can be affected more than once. You can affect fewer secondary targets than the maximum. If the chained spell deals damage, the sondary targets each take half as many dice of damage as the primary target (rounded down) and can attempt Reflex saving throws for half of the secondary damage. For spells that do not deal points of damage, the save DCs against arcing effects are reduced by 4. A chained spell uses up a spell slot 3 levels higher than the spell’s actual level. Tome and Blood, pg 39.
REQ: Any other metamagic feat
You can chain any spell that specifies a single target and has a range greater than touch. The chained spell affects that target normally, the arcs to a number of secondary targets equal to your caster level. Each arc affects one secondary target. You choose the secondary targets as you like, but they must all be within 30’ of the primary target, and no target can be affected more than once. You can affect fewer secondary targets than the maximum. If the chained spell deals damage, the sondary targets each take half as many dice of damage as the primary target (rounded down) and can attempt Reflex saving throws for half of the secondary damage. For spells that do not deal points of damage, the save DCs against arcing effects are reduced by 4. A chained spell uses up a spell slot 3 levels higher than the spell’s actual level. Tome and Blood, pg 39.