Summoning III, Incredible (Feat)
You are able to summon hordes to do your bidding.
Prerequisites: Level 31, Summoning I, Incredible (Feat), Summoning II, Incredible (Feat)
Benefit: Whenever you cast any summoning spell you possess (which may include use of a magic item), you may summon up to three additional monsters per casting. However, when you do so, the base CR of all the monsters summoned is reduced by 1 per additional monster summoned after the first (i.e. -3 to the base CR of all monsters if you summon four monsters).
This feat's benefit replaces (does not stack with) the benefits of both Incredible Summoning I and Incredible Summoning II.
Normal: Monster summoning spells normally only summon a single monster. Since these spells lay a charge on the caster, you can only have one summoned monster at a time.