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 - $73.50
Lightly Played Unlimited - $58.80
Moderately Played Unlimited - $44.10
Heavily Played Unlimited - $29.40
Damaged Unlimited - $18.40