Birthing Ritual
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.
Illustrated by Alix Branwyn
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Birthing Ritual's ability checks if you control a creature at the beginning of your end step. If you don't, the ability won't trigger.
If one of the revealed creature cards has
in its mana cost, X is 0 when determining that card's mana value.Use the mana value of the sacrificed creature as it last existed on the battlefield to determine the value of X.
If Birthing Ritual's ability does trigger but you control no creatures when it tries to resolve, the ability will do nothing.
