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 - $84.10
Lightly Played Unlimited - $79.90
Moderately Played Unlimited - $71.50
Heavily Played Unlimited - $63.10
Damaged Unlimited - $58.90