Tax Collector

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.)
Death and Taxes - Whenever an opponent taps an artifact for mana, if it's not the first artifact they've tapped for mana that turn, they choose one:
-They lose 2 life and you gain 2 life.
-You create a Gold token.