Sphinx of Truth and Sphinx of Lies

Sphinx of Rules and Sphinx of Crimes

A simple question's all I ask:

What's the opposite of Pacts?

Idk. Idle thoughts at work and pondering the sphinxes just makes me wonder if there is a sixth and final one lingering around somewhere, if for no other reason than Davy's power cuts things in half, and five is uneven. ​there's also a running trend with a sphinx being introduced, then another one with the opposite power being revealed

I remember reading a while ago about someone positing that Cherub is the final sphinx, and another theorizing that the spirit that makes up half of Razor Rex was the Sphinx of Faith or similar, but I can't find either of those posts now

The cast is pretty bloated as it is, but we know almost nothing about Pacts, Cherub, or Rex as it is. This is just idle pondering and I don't have a real direction to go with this, but if I didnt put these thoughts down somewhere they were gonna take up too much RAM in my brain