If an activated ability of a creature you control that doesn't have the same name as Marvin references the card it's printed on by name, treat Marvin's version of that ability as though it referenced Marvin instead. For example, say you control Marvin as well as Floodpits Drowner (which has the ability "{1}{U}, {T}: Shuffle Floodpits Drowner and target creature with a stun counter on it into their owners' libraries."). You would treat Marvin's version of the ability as though it said "{1}{U}, {T}: Shuffle Marvin, Murderous Mimic and target creature with a stun counter on it into their owners' libraries."