Scrupulous Investigator

Whenever Scrupulous Investigator enters a zone, you may reveal it. If you do, draw a
card. (The zones are library, hand, stack, graveyard, battlefield, exile, and command.)
Madness {4}{u}{u} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)