tricksty

(Adjective)-probable portmanteau of tricky and sneaky, point of origin most likely Tolkien, as part of Gollum's corrupted dialect("tricksty hobbitsess").

Descriptor implying tricky or impossible seeming actions, random weirdness, intermittent recurring but unpromptable occurrances, and/or exhibiting apparently unnatural skill or talent in a possibly fantastical way, often involving large amounts of either wit or luck.

"That was a tricksty move you pulled!"

"The steering on my car keeps going all tricksty on me"

"Dude, the Roadrunner is way tricksty"