Effect
You can only use 1 "Exchange of Night and Day" effect per turn, and only once that turn. You can activate 1 of these effects; ● Send 1 LIGHT Warrior-Type monster from your hand to the Graveyard, then add 1 DARK Warrior-Type monster from your Deck to your hand, with the same Level the sent monster had in your hand. ● Send 1 DARK Warrior-Type monster from your hand to the Graveyard, then add 1 LIGHT Warrior-Type monster from your Deck to your hand, with the same Level the sent monster had in your hand.
The activation of the card "Reversal of Light and Dark" can be performed at any time except during the Damage Step. (It can be activated during either your turn or your opponent's turn.)
You can only activate one of the "●" effects of "Reversal of Light and Dark" once per turn. Neither effect can be activated during the Damage Step. Also, you can activate an effect in the same Chain block as the activation of the card.
The effect "● Send 1 Warrior-Type LIGHT monster from your hand to the GY; then, add 1 Warrior-Type DARK monster with the same Level as that monster from your Deck to your hand" creates a Chain block. (Sending a monster from your hand to the GY is part of the effect resolution, not a cost. Also, the process of sending a monster from your hand to the GY and the process of adding a monster from your Deck to your hand are not treated as happening simultaneously.)
The effect "● Send 1 Warrior-Type DARK monster from your hand to the GY; then, add 1 Warrior-Type LIGHT monster with the same Level as that monster from your Deck to your hand" creates a Chain block. (Sending a monster from your hand to the GY is part of the effect resolution, not a cost. Also, the process of sending a monster from your hand to the GY and the process of adding a monster from your Deck to your hand are not treated as happening simultaneously.)
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