Augment Summoning

Augment Summoning( Sorcery)
The creatures you summon are especially strong and tough.
Prerequisites: Summoner, magic attack bonus +4.
Benefit: Each creature you conjure with any spell from the Summoning sorcery style gains a +4 enhancement bonus to Strength and Constitution for the duration of the spell that summoned it.

Augment Summoning

Glimpses of Hyboria Elfbane