what type of hack is this ?

hey guys the other day i was playing in monaco and there was a hack who like owned every one with a knife i thought he was under map cas noone could see him but then i seen a knife floating in mid air and i put mouse on it and came up his name so he was invisable what type of hack is this i have never seen this before ?

Probably teleport opk or invisibility. If it was invisibility you wouldn't see the knife either unless the coder failed. Probably teleport opk though.

Invisible + knife hack perhaps?