During either player's Battle Step, when a Fusion Monster you control battles an opponent's Fusion Monster: Target both those Fusion Monsters; negate the attack, and if you do, each player takes damage equal to the combined ATK of both those Fusion Monsters.
NM-Mint 1st Edition - $0.20
NM-Mint 1st Edition Non English - $0.20
Lightly Played 1st Edition - $0.20
Lightly Played 1st Edition Non English - $0.20
Moderately Played 1st Edition - $0.20
Moderately Played 1st Edition Non English - $0.20
Heavily Played 1st Edition - $0.20
Heavily Played 1st Edition Non English - $0.20
Damaged 1st Edition - $0.20
Damaged 1st Edition Non English - $0.20