If I recall my Artificer: Druid past lives, ship buff, Augment and Imp Augment, and Harper leadership... are (+25) even without the Filigree set.
The filigree set adds another (+8) total, Melee and sheltering, and having a (+33) later on turns some of those summons into little maniacs.
That being said, if you just need a can opener, use Druid lives, an Augment gem, and the ship buff, and still gain a chunk with less investment.