2 official rulings from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Can I activate this card's effect after I attack with it and resolve all battles and checks?
No, you can't. This effect can only be activated after declaring an attack, before your opponent's reaction timing window.
Ruled Mar 28, 2024
Do I have to use this card's effect when I attack with it?
No. The effect is voluntary.
Ruled Mar 28, 2024
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