Downgrade Infection

[REQUIREMENT] Can be activated by placing 1 card from your hand on the bottom of your Deck during the turn you Normal Summoned "Blue-Fang Burst Dragon". (Once per Duel.) [EFFECT] All face-up monsters on the field with 2000 or more ATK lose 500 ATK until the end of this turn. This turn, you can only attack directly with "Blue-Fang Burst Dragon".