“Omnipresent” means everywhere at once, while “ubiquitous” means seeming to be everywhere at once. My question is whether “omnipotent” (all-powerful) has a similar ‘seeming to be all-powerful’ counterpart.
For the adjective ubiquitous, it’s interesting to note that, while the free version of M-W (at the link) gives the “seeming to be seen everywhere” definition, the Unabridged version does not:
ubiquitous, adj.: existing or being everywhere at the same time : occurring or capable of appearing everywhere or in many places
throughout a particular area, sphere, or production : omnipresent
So to fill in the blank, any synonym of omnipotent that pleases your ear will do. I would suggest puissant:
Omnipresent is to ubiquitous as omnipotent is to puissant.