Summon Giant Ally I

Conjuration (Summoning) [see text]
Level: Druid * 6, Hunter * 6
Components: V, S, F/DF (bit of cloth from a giant's bag)
Casting Time: 1 Standard Action
Range: close (25 ft. + 5 ft./2 levels)
Effect: one or more giants
Duration: 1 round/level (D)
Saving Throw: None
Spell Resistance: no
  This spell functions as summon nature's ally VI, except its casting time is shorter and you can summon one cave, hill, marsh, river, slag, stone, or wood giant.