When a monster would be Summoned, OR a Spell/Trap Card is activated: Pay half your Life Points; negate the Summon or activation, and if you do, destroy that card.
Near Mint Unlimited - $40.30
Lightly Played Unlimited - $36.30
Moderately Played Unlimited - $30.20
Heavily Played Unlimited - $24.20
Damaged Unlimited - $20.20