It is very easy to get back a lot of dorks early if they are there to be recurred, and very cheaply
Liliana, Heretical Healer // Liliana, Defiant Necromancer San Diego Comic-Con 2015 Market Price: $147.04 Exclusive to the 2015 rendition of San Diego Comic-Con, this strikingly monochromatic version of the transforming Liliana card actually predated her official release in 2015s Magic Origins
However, Trial of Knowledge is still a Sift with the added benefit of sitting on the battlefield, waiting to combo with Cartouche of Knowledge (which Trial of Knowledge helps find)
This is different as it cares about artifact dorks, and the pro-artifact only is, I guess, cleaner than Jhoira's historical clause, but it's still something just printed, so this was a missed opportunity
The second Shapeshifter has two instance of this ability
A unique commander like Syr Gwyn, Hero of Ashvale that blends equipment and go-wide strategies can also benefit from both the recursion and the life gain on this card