Fox Mulder, Agent of Suspicion

Partner with Dana Scully, Agent of Tenacity
Whenever a creature an opponent controls leaves the battlefield or is put into the graveyard from anywhere, investigate. (Create a Clue artifact token. It has {2},{t},sacrifice this artifact: Draw a card.)
Whenever you sacrifice a Clue, put a +1/+1 counter on Mulder and he gains menace until the beginning of the next end step.