Whenever another nontoken creature enters the battlefield under your control, investigate.
T, Sacrifice X Clues: Target opponent reveals the top X cards of their library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield under your control. That player puts the rest on the bottom of their library in a random order.
Near Mint - $0.20
Lightly Played - $0.20
Played - $0.20
Heavily Played - $0.10
Damaged - $0.10
Near Mint Non-English - $0.20
Lightly Played Non-English - $0.20
Played Non-English - $0.20
Heavily Played Non-English - $0.10
Damaged Non-English - $0.10