If I scribe a summon monster scroll and then cast it, do the summoned creatures get modified by my characters Augment Summoning, or do they only affect spells that I cast?
(Official FAQ 8/30/10) No. Unless they specifically state otherwise, feats and abilities that modify spells you cast only affect actual spellcasting, not using magic items that emulate spellcasting or work like spellcasting. [Source] A: (Jason Bulmahn) Augment Summoning does affect monsters summoned using scrolls. Reference casting scrolls “Determining Effect” portion of the scrolls description. “A spell successfully activated from a scroll works exactly like a spell prepared and cast the normal way.