Belfrey Dupreau, Bane of Leng

Whenever you cast an instant or sorcery spell, investigate. (Create a colorless Clue artifact token
with "{2}, Sacrifice this artifact: Draw a card.")
Whenever you investigate for the first time each
turn, creature spells you cast cost {c}{c} less to
cast until end of turn.
"You wanna shoot first, ask questions later?
Fine by me. Already got plenty of answers."