If this card is Special Summoned, or if another Spellcaster monster(s) is Special Summoned to your field: You can target 1 card in your opponent's Gy; banish it. If this card is destroyed by battle, or if this card in its owner's Monster Zone is destroyed by an opponent's card effect: You can target 1 Level 4 or lower Spellcaster monster in your GY; Special Summon it. You can only use this effect of "Night's End Administrator" once per turn.