Heinrich, Relentless Seeker

Extort (Whenever you cast a spell, you may pay {w/b}. If you do, each opponent loses 1 life and you gain that much life.)

When this creature enters, look at target opponent's hand. You may choose a nonland card from it. That player discards that card.

Whenever this creature attacks or whenever an opponent discards a card, Investigate.

"The price of heresy is steep, and I am the collector."