Attack Declaration still happens for this card's second attack with its ② effect.
If the Spell Card is activated before "Nitro Warrior" is Summoned, "Nitro Warrior" does not gain 1000 ATK during its next attack.
The second effect of "Nitro Warrior" targets 1 of your opponent's face-up Defense Position monsters.
The second effect of "Nitro Warrior" activates at the end of the Damage Step, when monsters destroyed by battle are sent to the GY. If you activate this effect you will return to the Battle Step and attack the selected monster with "Nitro Warrior".
If the second effect of "Nitro Warrior" is used to attack again, cards like "Sakuretsu Armor" can be activated when the additional attack is declared.
If "Toll" is active, the controller of "Nitro Warrior" pays 500 Life Points when they declare the additional attack.