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 - $23.90
Lightly Played Unlimited - $22.70
Moderately Played Unlimited - $20.30
Heavily Played Unlimited - $17.90
Damaged Unlimited - $16.70