Effect
If you have 3 or more cards in your hand (other than this card), and none of them are monsters: Banish your entire hand face-up; add 1 monster from your Deck to your hand. If you do, you cannot Normal or Special Summon any monsters for the rest of this turn, except monsters with that name.
You cannot activate "One-for-One" if you have 1 or more monster cards in your hand.
If you are activating "One-for-One" from your hand, you can activate it when you have 4 or more cards in your hand. If you are activating "One-for-One" that is Set in your Spell & Trap Zone, you can activate it when you have 3 or more cards in your hand.
When activating "One-for-One," banish all cards in your hand face-up as the cost.
The effect processing of "One-for-One" is treated as finished at the point where you add the monster from your Deck to your hand. (The effect "You cannot Summon/Special Summon monsters with the same name as the added monster for the rest of this turn" is also applied immediately.)
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