Prince of Pacts wrote:
He suspended the Ministry of Truth with CHIM. CHIM means royality in Ehlnofex. It can only be used to do things through Love. Vivec loves his people, so he prevented the Ministry from crashing. Talos loved his Red Legions, so he changed Cyrodiil's landscape into a temperate grassland.
Not necessarily; Lie Rock fell following the connection to the Heart being severed by the Nerevarine, which makes me think that it has something to do with the abilities granted by a connection to the Heart, rather than CHIM, which Vivec never loses.
PLaat Dovahkiin wrote:
As I understand it, when you achieve CHIM, you can basically do whatever you want, you can change everything. The whole universe is at your disposal actually. You are not bound to the Godhead anymore. You know you are fictional character, that you don't actually exist, but you still have your individuality, your "I", like any other mortal or immortal being. That's how I understand CHIM, but there is still a lot we don't know about it.
I'm not convinced that CHIM is "do whatever you want", it's "do what thou wilt", in the sense that Crowley used it - that is, do whatever you would do, without thought for the end result. Is it good? Is it bad? Is it nothing at all? Doesn't matter, you would do it anyway. Those things are a person's Will. Crowley also talks about Love, which he defines as actions done while acting in accordance with someone's Will. So while you can (possibly) do anything, you won't actually do anything but what you would do regardless of circumstances, or any outside influence at all.
Rottendeadite made a fantastic post about it here: https://www.reddit.com/r/teslore/comments/18gt8w/what_is_love/
To the OP, the only things I would definitely put down to Vivec's use of CHIM was the rewriting of his own history, so that he was always a god. Another thing that it appears that CHIM cannot do however is provide immortality - Tiber Septim did not become an immortal walking-talking being, so Vivec's immortality on that score was almost certainly the Heart. Anything else is too tangled with both the Heart and CHIM on the table to get a clear answer.