Royal Rebel's Growl

[ Fiend / Effect ] [REQUIREMENT]During the turn you Normal Summoned this card by Tributing a Level 5 or higher monster, send the top card of your Deck to the Graveyard. [EFFECT] 1 face-up Level 8 or lower monster on your opponent's field loses ATK/DEF equal to [its Level] x 200 until the end of this turn. ATK/ 1800 DEF/ 0