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 - $96.10
Lightly Played Unlimited - $91.30
Moderately Played Unlimited - $81.70
Heavily Played Unlimited - $72.10
Damaged Unlimited - $67.30