The Elucidator is a time traveling device from the future. It can camouflage itself in any time period. For example, in the 21st century it was a phone but in 1483 it looked like a rock.
Costume (can make someone look and sound like someone else as discovered in Sent)
Mute (can be put on mute, usually by)
Has many other discovered options that will be discovered throughout the series