Psionic/Arcane Discovery (3.5e Feat)
From D&D Wiki
Psionic/Arcane Discovery [Psionic]
Through diligent study and flawless searching through ones mind, you have learned how to use a wizards mighty spell with your mind.
Prerequisite: Expanded Knowledge, Must be able to use 2nd level powers
Benefit: Choose any spell of up to one level lower than the highest level power you can cast. Add that spell to your powers known. The spell can be augmented in one fo the following ways:
For every additional power point you spend, this power’s damage increases by 1 damage die. For each extra 2 damage dice added, this power’s save DC increases by 1.For every 2 additional power points you spend, this power’s save DC increases by 1.