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 - $23.55
Lightly Played Unlimited - $22.60
Moderately Played Unlimited - $19.20
Heavily Played Unlimited - $16.80
Damaged Unlimited - $12.00