There’s a wonderful potential for Rube Goldberg-esque sequences that play out within an instant, and hopefully that’s what David Leitch is referring to when he describes the “really cool visual ideas.”
For example, if you try and shoot a gun at her, mechanisms within the gun will shift and cause it to jam.
On the surface, Domino’s mutant ability appears to be “Good Luck,” but it’s actually much more complicated than that.
Raised as a genetic experiment, she has a subconscious telepathic skill that allows her to change her environment in her favor.