(Flash Step)(Your Main Phase) Select 1 of the following: (1) Destroy up to 2 target spirits your opponent controls with 3000 BP or less. (2) Destroy a spirit with 3000 BP or less and a nexus your opponent controls.
Zero Counter - When the opponent summons a Spirit/Brave without paying the cost, other than by a Burst effect. this card in your hand can be used without paying the cost and immediately activate the following effect.
█ Return an opposing Spirit to the deckbottom. After this effect resolves, by paying one cost, return this card to your hand.
Flash - Destroy two opposing 5000 BP or less Spirits. Or, destroy an opposing 5000 BP or less Spirit and a Nexus.
The English card does not specify that destroying exactly 2 spirits isn't mandatory.