Lazlo the Compeller

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.)

Whenever an opponent commits a crime, investigate.
(Targeting opponents, anything they control, and/or cards
in their graveyards is a crime.)

Clues you control have extort.

As long as you’ve cast a spell with mana value 4 or greater
this turn, extort abilities of permanents you control trigger
an additional time.