Gluttonous quicksands

When a creature comes into play, clash with an opponent. The winner may return that creature to its owner's hand. If you own that creature, you may draw a card and untap up to X lands, where X is the creature's casting cost.

"More commonly known as quicksands, lazy elementals are more than happy to reward anyone willing to feed them for free."
-Senior Mage Yoon, Expedition logbook