Birthing Ritual (Modern Horizons 3)

At the beginning of your end step, if you control a creature, look at the top seven cards of your library. Then you may sacrifice a creature. If you do, you may put a creature card with mana value X or less from among those cards onto the battlefield, where X is 1 plus the sacrificed creature's mana value. Put the rest on the bottom of your library in a random order.

NM - $6.00
LP - $4.50
MP - $3.50
HP - $2.50
DMG - $2.00