Criatura — Espíritu
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Vuela.
Cuando esta criatura entre, muele tres cartas. (Pon las tres primeras cartas de tu biblioteca en tu cementerio.)
Umbral — Esta criatura obtiene +2/+1 mientras haya siete o más cartas en tu cementerio.
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to Billowing Shriekmass may become lethal if the number of cards in your graveyard falls below seven.