To flip (known as リバース, ribāsu, "reverse" in the OCG) is to change card from face-down to face-up position, or vice versa. Players are not allowed to flip a face-up card face-down, except through a card effect.

Ways of flipping monsters Edit

There are ONLY four ways a Monster Card can be flipped:

1. Through Flip Summon.
2. Through battle position changes; a face-down Defense Position Monster Card must be flipped when it changes to Attack Position through card effect like "A/D Changer".
3. Through battle; a face-down Monster Card must be flipped at the Damage Step if it was attacked.
4. Through a card effect, such as "Swords of Revealing Light" or "Book of Moon".

Ways of Spells/Traps Edit

There are two ways a Spell/Trap Card can be flipped:

1. Through activating it.
2. Through a card effect, such as "Scrap-Iron Scarecrow".