Killian, Decisive Mentor Black-White enchantress sounds fun, and a goading/aura subtheme feels novel enough for Orzhov/Prismari
Outside of ghoulish overkill, it can always attack and pump the team for +2/+2 and trample, which isnt the most exciting floor, but you only need to gain two or three life before attacks for this to feel overwhelming
Map tokens come with an ability that lets you (at sorcery speed, so in your main phase with nothing else on the stack) pay 1 mana, tap the map token, and sacrifice it
The aura subtheme of EDHREC.com is the 13th most common archetype, and enchantments are right behind at 14th, but you have to build in a lot of infrastructure to make it work, since auras are innately card disadvantage so you need ways to build around it
You cant beat the name Scuttling Doom Engine