Negate your opponent's first monster effect that resolves each turn while you control a Spellcaster monster with 1500 DEF. During your Main Phase: You can reveal 1 Spellcaster monster from your hand, and if you do, add 1 monster with the same Attribute, but with 1500 ATK/200 DEF, from your Deck to your hand, and if you do that, shuffle the revealed card into the Deck. You can only use this effect of "Grand Spiritual Art - Ichirin" once per turn.