[RF]Endless Maw (Blue)

As an additional cost to play Endless Maw, banish 3 random cards from your graveyard.
If a card with 6 or more [Power] is banished this way, Endless Maw gains +3 [Power].
Blood Debt (At the beginning of your end phase, if Endless Maw is in your banished zone, lose 1[Life].)