Merchant of Vice

Invest 3 (When you cast Merchant of Vice, you may pay 3 life. If you do, whenever Merchant of Vice leaves the battlefield, you gain 3 life.)
Pay 2 life: Target player discards a card. If that card was a land card, you gain 1 life. Activate this ability only once every turn.
"No money left? That's okay. You just have to sell me something that you value deeply."