Lubell Kyris, the Resonant Flame

If this card is in your hand and there is a card(s) in either player’s Spell & Trap Zone: You can Special Summon this card. If this card is Special Summoned: You can target 1 monster your opponent controls; place it in their Spell & Trap Zone as a Continuous Spell, then inflict 500 damage to your opponent for each monster currently in either player’s Spell & Trap Zone. If this card is sent to the GY: You can target 1 card in a Spell & Trap Zone; destroy it. You can only use each effect of "Lubell Kyris, the Resonant Flame" once per turn.