She is a kind of goddess with amazing powers.
You need to put three amulets into their respective wheels in order to open a door.
Another possible etymology is the Russian word ÄetÃ½re and its Slavic cognates, meaning four; in reference to the four elements that Cetrion controls.
And those are all the Fatalities for Cetrion in Mortal Kombat 11! Having in mind I'm online and it's almost impossible to flawless block the boulder.