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 - $77.70
Lightly Played Unlimited - $73.80
Moderately Played Unlimited - $66.10
Heavily Played Unlimited - $58.30
Damaged Unlimited - $54.40