If you controlled 2 or more monsters at the start of your opponent's Battle Phase, and all of them were destroyed by battle and sent to the Graveyard, you can Special Summon this card from your hand during that Battle Phase. If you do, declare an Attribute and destroy all face-up monsters with that Attribute. Your opponent cannot Normal or Special Summon monsters with that Attribute.
: Continuous Monster Effects typically come into play as soon as the monster is successfully Summoned, and don't disappear until the monster is removed from the field or flipped face-down.
: Trigger Effects activate whenever a certain condition on the Field, the nature of play, or the progress of the turn, is met.