While your Life Points are lower than your opponent's, the equipped monster's ATK becomes double its original ATK. While your Life Points are higher, the equipped monster's ATK becomes half its original ATK.
Near Mint Unlimited - $7.50
Lightly Played Unlimited - $6.80
Moderately Played Unlimited - $6.00
Heavily Played Unlimited - $5.30
Damaged Unlimited - $3.80