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 - $3.70
Lightly Played Unlimited - $3.50
Moderately Played Unlimited - $3.20
Heavily Played Unlimited - $2.80
Damaged Unlimited - $2.60