Title say everything,i have found this feat reading this forum,and before start another long discussion with master and player,i want to ask:
if i apply Extend Spell to my druid with Summon nature ally 8,with augmenting summon (+4 str/cos) and have Spell perfection http://www.d20pfsrd.com/feats/general-feats/spell-perfection
my summoned creature (single for the 8,1d3 for 7th,1d4+1 for 6th) would get +8 str/cos?
RAW I'm not sure if the +4 STR/CON from augment is a fixed numerical bonus to an aspect of the spell because it modifies the creature(s) summoned by the spell and not the spell itself, but at the cost of 5 feats and 1 skill point per level I would probably allow it
6 feat,dont forget spell focus xD
Spell Perfection doubles any feat bonuses that are expressed as "fixed, numerical bonuses applying to any aspect of the spell". RAW, Augment Summoning fits those criteria, so they would double with Spell Perfection. For that matter, so would the extra creature from Superior Summoning.
The real cheese comes when you use Magical Lineage on the 8th level version of your summon spell, and empower it for free for (1d3x1.5)+2 7th level or (1d4x1.5)+3 6th level or lower, all with +8 to Str/Con using all of the above feats