Needs review
Source: Epic Level Handbook

Description: Select a spell you can cast. You can spontaneously convert spells of that spell's level into that spell.

Prerequisites: Epic Level, Spellcraft (25 ranks), Ability to cast the maximum normal spell level of at least one spellcasting class

You may spontaneously convert any prepared spell of the selected spell's level into the selected spell, just as a cleric channels energy to convert spells into cure spells.

Special

You can gain this feat multiple times. Each time you take the feat, it applies to a different spell.