Time Thief

"Time Thief" is a TCG-exclusive archetype of Level/Rank 4 DARK Machine and Psychic monsters that debuted in Savage Strike.

Appearance
These cards appear to take cues from the long running British science-fiction series Doctor Who. The Psychic members appear to be based on the many incarnations of the The Doctor, whereas the Machine members come from equipment they use to travel in time and space.

Playing style
The archetype focuses around taking cards owned by the opponent and attaching them to their Xyz Monsters as Xyz Material, creating unique potential for unorthodox disruption. The main deck monsters are all dedicated to maintaining a solid Rank 4 engine. Being composed of only DARK monsters, they have access to numerous generic support cards such as "Allure of Darkness".

As the deck relies on 'thieving' your opponent, a combination of "Rank-Up-Magic Barian's Force" (or "Rank-Up-Magic Limited Barian's Force" + "Overlay Eater") with "Reprodocus" can be considered, as you can use the effect of "Time Thief Hack" on any Xyz Monster, including "Number C" monsters to attack your opponent directly.

"Xyz Reborn" is a good recovery card to play due to attaching itself as material to the revived Xyz Monster.