Card Rulings:Hero Spirit
OCG Rulings
- It cannot be activated during the Damage Step.[1]
- After "Hero Spirit" is activated, if the Battle Phase ends without an opponent's monster battling, the effect "Make the Battle Damage from 1 of your opponent's monsters 0" stops applying. (The effect only applies during the turn "Hero Spirit" was activated. The effect is not applied from the next turn onward.)[1]
- After "Hero Spirit" is activated, the first battle damage received from an opponent's monster becomes 0.[1]
- If the effect "Make the Battle Damage from 1 of your opponent's monsters 0" is applied, players take no battle damage from that battle. Also, in that case, if your monster would be destroyed by battle, that monster you control cannot be destroyed by that battle.[1]