Select 1 of your removed from play DARK monsters and Special Summon it. When this card is removed from the field, destroy and remove from play that monster. When that monster is destroyed, destroy this card.
1 of your DARK monsters Special Summon . When this card the field, destroy and that . When that is destroyed, destroy this card.
Target 1 of your banished DARK monsters; Special Summon that target. When this card leaves the field, destroy that target. When that target is destroyed, destroy this card.