Fortunately, this is offset by Jin-Gitaxias' rather hefty mana cost, and that each half of it only triggers once each turn
And that's when we came up with nothing
Paying 2 each turn just isnt feasible, although I could imagine a world where sacrificing it could be beneficial, but this is highly unlikely with the powerlevel being where it is
You cant beat the name Scuttling Doom Engine
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
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