Intensify Summoning

This spell enhances the strength of creatures summoned by the caster via 1st through 6th level conjuration/ summoning spells. Only spells which bring summoned creatures to the wizard are affected.
The first two conjuration/summoning spells cast by the wizard within one turn following the intensify summoning spell are affected. Summoned creatures gain 2 hit points per hit die. The affected creatures retain their bonus hit points until the normal expiration of the spell that summoned them.
The necromantic variation of this spell is restricted to necromancers and affects only summoned undead.

[Tome of Magic]

School: Conjuration/Summoning, Necromancy
Level: 7
Rarity: Uncommon

Range: Special
Components: V, S, M
Duration: 1 turn
Casting Time: 6
Area of Effect: Special
Saving Throw: None

Material Components:
a small leather pouch and a miniature silver candelabra