If they linger too long without making a purchase, you can encourage them to leave, making room for new shoppers and maintaining a steady flow of business
Stinging Cave Crawler Two generic, one black, Creature - Insect Horror - 1/3 - Uncommon Deathtouch Descend 4 Whenever Stinging Cave Crawler attacks, if there are four or more permanent cards in your graveyard, you draw a card and you lose 1 life
Looking at some of these other sheets makes me want to try to figure out some of the smart stuff that you can do in excel
For example, if the exiled card is a land card, you may play it only during your main phase while the stack is empty and only if you have an available land play remaining.
I have actually had these images for a LONG time, but I have never gotten around to them before now, since I have had so many other ideas that I wanted to do first