Breaker the Magical Warrior (Secret) (SBCB-EN008) [Speed Duel: Battle City Box]

If this card is Normal Summoned: Place 1 Spell Counter on it (max. 1). Gains 300 ATK for each Spell Counter on it. You can remove 1 Spell Counter from this card, then target 1 Spell/Trap on the field; destroy that target.