If this card battles a monster, neither can be destroyed by that battle. You can only use each of the following effects of "Millenniumoon Maiden" once per turn. If this card is in your hand: You can place it face-up in your Spell & Trap Zone as a Continuous Spell. If your opponent activates a card or effect while this card is a Continuous Spell: You can Special Summon this card, and if you do, your opponent cannot target Level 5 or higher Illusion and Spellcaster monsters you control with card effects this turn.