Infinite Energy

Is it possible for certain entities to be imbued with an unlimited power supply, but have very limited capabilities (neither omnipotent or nigh omnipotent) on what they can do with that energy?

Hello everyone I am completely new to fandom and I have no idea how anything works so I am asking more experienced people to do what I am requesting.

Please Add INFINITE MANA from (INFINITE MANA IN THE APOCALYPSE) to the wiki as I think it is a suitable power to add. For I have not seen any power like this except for infinite supply but I don’t know if it is the same power or not as the Infinite mana, so please anyone who has some time to look into the (infinite mana in the apocalypse) fandom please add this power thank you. Or if there is already a similar power please leave a reply.

Is it possible to fully erase an infinite source of energy that a person uses? Even if there is a limit to how much of the energy they can use, can the power be erased or is there a another way to remove it from their being?

What would you do with Quintessence?

I've been here thinking with what powers would it be possible to create a continuous motor?

of course it's not worth omnificiency and the like, and then guys with what powers would it be possible to create a continuous engine?

in my opinion it would be possible with gravity using for acceleration, and a saving ability or more efficient use of energy, the machine I don't know yet, and so what ideas of powers do you have to do this? of course if possible explain the working process