Augment Summoning
(Tome and Blood: A Guidebook to Wizards and Sorcerers, page 39, DnD 3.0)
[General]
Your summoned creatures are better than normal.
Prerequisite
Spellcaster Level 2
Benefit
Creatures you conjure with any summon spell gain +1 hit point per Hit Die and a +1 competence modifier on attack and damage rolls