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 material components are a small leather pouch and a miniature silver candelabra.
Note: Uncommon spell (ToM). A necromantic variant exists, restricted to necromancers and affecting only summoned undead.