Unfortunately, that's Widen Supernatural Ability, not Widen Spell-Like Ability. I'd have to get TGT to first approve Supernatural Transformation from Savage Species (turns a Spell-Like Ability into a Supernatural Ability), then get WSA, and it'd still only be 1/day. A Supernatural Eldritch Blast would be nice though, eliminate that pesky Spell Resistance without having to resort to Acid damage all the time.