Collaborative Thaumaturgy

Universal
Level: Artificer * 3, Bard * 3, Cleric */Oracle * 3, Druid * 3, Hunter * 3, Magus * 3, Sorcerer */Wizard * 3, Summoner * 3, Warlock * 3
Components: V, S, F (a bronze tuning fork)
Casting Time: 1 Immediate Action
Range: close (25 ft. + 5 ft./2 levels)
Target: one creature
Duration: instantaneous
Saving Throw: -
Spell Resistance: -
  You tap into the magical resonance between you and your allies to enhance one another's magic. Cast this spell when an ally casts a spell at least 1 level lower than the highest-level spell she can cast.
  The ally casts her spell as if one of the following metamagic feats were applied to it without increasing the spell level or casting time: Enlarge Spell, Extend Spell, Silent Spell, or Still Spell. If the ally is the target of two collaborative thaumaturgy spells when casting a spell, the ally can instead apply the Empower Spell metamagic feat to a spell at least 2 levels lower than the highest-level spell she can cast. Finally, if the ally is the target of three collaborative thaumaturgy spells when casting a spell, she can instead apply the Maximize Spell or Widen Spell metamagic feat to a spell at least 3 levels lower than the highest-level spell she can cast. You can't target yourself with collaborative thaumaturgy.