Advanced Crystal Beast Onyx Bear

(This card is also treated as "Crystal Beast Onyx Bear".)
If there is no face-up "Advanced Dark" on the field, destroy this card. When this card is sent to the Graveyard: You can place this card face-up as a Continuous Spell Card instead. Once per turn: You can flip 1 face-up "Advanced Crystal Beast" Continuous Spell Card face-down, then target 1 card on the field; destroy that card.