If you control a Spellcaster-Type monster and your opponent does not, your opponent cannot activate Spell Cards. If you control no Spellcaster-Type monsters, you cannot activate Spell Cards.
Near Mint Unlimited - $16.70
Lightly Played Unlimited - $15.00
Moderately Played Unlimited - $12.50
Heavily Played Unlimited - $10.00
Damaged Unlimited - $8.40