Artefacto — Equipo
Siempre que la criatura equipada ataque, el Arco perforacorazones hace 1 punto de daño a la criatura objetivo que controla el jugador defensor.
Equipar

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If a creature is attacking a planeswalker, the controller of that planeswalker is the defending player. If a creature is attacking a battle, the protector of that battle is the defending player.