1 + Int + level? That's TERRIBLE!Artificer Arcane Empowerment (Capstone Enhancement)
Cost: 2 action points
Action Points Spent Prerequisite: 74
Available to Artificer class level 20
The patterns of the most complex magical formulae are like children's drawings to you. You treat any non-scroll activated equipped item that casts spells (such as wands, rods, armor, or other activated items) as if they were staves, increasing their caster level to equal yours as well as increasing Save DC's to (1 + your Intelligence bonus + level of spell) if it would be an improvement. These increases are applied after Artificer Knowledge, so do not stack.
Consider: Wand of Phantasmal Killer, because it's one of the obvious things to try this with.
Used by a Wizard: DC = base (10) + spell level (4) = 14.
Used by an Artificer: DC = base (1) + Int (#) + spell level (4) = 5+Int.
So, if you have less than 30 Int, this gives you nothing at all. If you have more, that's nice. But you'll never get it to the kind of DC that will work on, well, anything you'd want to fight as a level 20. And that's the level that matters, because, in case you forgot, this is a CAPSTONE.
For reference, max sustainable 44 Int (18 +5level +4tome +3enhancement +7item +3exceptional +1litany +1human +2yugo) means DC 22. Triple wizard past lives and triple wand heightening enhancements caps your DC at 31.
Please, put this back to 10+level+Int, just as though it was being cast without Heighten, Spell Focus, DC-enhancing items, or PrE DC boosts. It's already far enough behind spells cast by actual casters without an artificial -9.
EDIT: Release notes were in error, two dev posts below.