system
Given the following post, respond as if you're commenting on Reddit:
human
[Marve] Can Mystical beings chose not to lend their power to sorcerers when they phrase their names?

You know Sorcerer in Marvel tend to Phrase the name of Mystical being when they want to borrow those entity powers. However, can the entity chose not to let the sorcerer borrow their power?

Do those entities even aware when people are borrowing their power?
gpt
I think thats what a pact is for. 

You make a deal with an entity to use their powers, they agree with terms and conditions, you get to invoke their name and tap into their power briefly. 

Its not like they get a notification every time Strange tries to invokes someone. 

They will however more often than not keep tabs on each other and keep tabs on how their power is being used. 

Death might be like hey "Vy'th'oo'ik you know that dude in sector 12 dimension 77812-A has been killing a lot of kids with the juice you gave him"