This allows you to dig up any other mana-producing land you need when you need it instead of hoping to draw the right one

You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness You get what you see, make sure to double click on images to zoom in and verify sharpness

There is no downside for an opponent drawing a card, making it so Kwain will often stay on the battlefield since it's drawing everyone cards and gaining them life
Assuming you can pick this up for a reasonable price, youre getting your moneys worth and then some
If Cartographer's Hawk leaves the battlefield before its triggered ability resolves, you can't return it to its owner's hand from its new zone
The turns leading up to doing that don't have time to pay for cards that are only going to do a tiny bit of damage with no other effects at all