
When this artifact enters, you may sacrifice a nontoken creature. If you do, draw X cards, then millmillPut that many cards from the top of a library into its owner's graveyard. X cards, where X is that creature's power.
CraftCraft, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery. with one or more creatures
: Return this card from your graveyard to your hand.
Wretched Bonemass's power and toughness are each equal to the total power of the exiled cards used to craftcraft, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery. it.
This creature has flying as long as an exiled card used to craftcraft, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery. it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, and vigilance.
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.