The tabletop (bartop) card vending machine dispenses cards or tickets when the player inserts a coin and presses the button
The original Zendikar was conceived as a "lands matter" set, and Zendikar Rising continues that proud tradition by bringing back landfall

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Correction 2 March - This article has been updated to make it clear the card was sold after, not during, the auction
This is exactly what Wubby Magic Monday did in their hilarious and chaotic Fully Slabbed Commander Game
You can easily slam this on turn 4 and get four mana back, making it effectively free to cast