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 - $1.30
Lightly Played Unlimited - $1.10
Moderately Played Unlimited - $1.00
Heavily Played Unlimited - $0.90
Damaged Unlimited - $0.70