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 - $41.75
Lightly Played Unlimited - $39.65
Moderately Played Unlimited - $33.40
Heavily Played Unlimited - $20.90
Damaged Unlimited - $16.70