Flying Whenever you cast a creature spell with mana value 3 or less, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")
Legalities
Not Legal
Alchemy
Future
Oldschool
Pauper
Paupercommander
Predh
Premodern
Standard
Standardbrawl
Legal
Brawl
Commander
Duel
Explorer
Gladiator
Historic
Legacy
Modern
Oathbreaker
Penny
Pioneer
Timeless
Vintage
Rulings
2016-04-08
Casting a spell for an alternative cost, such as a madness cost, doesn't change its mana value. For example, casting Twins of Maurer Estate (a card with mana cost and madness cost ) for its madness cost will not cause Bygone Bishop's ability to trigger.