All decks can make use of this, but it'll be much better in a dedicated sacrifice or food deck
29/102 Haunter
Something to keep in mind in case you come across a few of these types of uncommon foils
Graded Population Report: Vullaby #172 Visualize the distrbution of grades in the chart
There are a lot of ways to establish infinite loops with Emry all you need is something that untaps Emry when you cast the spell you target, like Jeskai Ascendancy, Paradox Engine, Intruder Alarm, or Mirran Spy, and a way to get whatever youre casting into your graveyard again, like the legend rule on Mox Opal or Mox Amber, or sacrificing the artifact, either to itself or something else
For ROI-focused buyers, individual alt arts are more efficient than opening boxes